Azure ( , ) is a variation of blue that is often described as the color of the sky on a clear day. On the RGB color wheel, "azure" (

hexadecimal In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the decimal system representing numbers using 10 symbols, h ...

#0080FF) is defined as the color at 210 degrees, i.e., the

hue In color theory, hue is one of the main properties (called color appearance parameters) of a color, defined technically in the CIECAM02 model as "the degree to which a stimulus can be described as similar to or different from stimuli that ...

halfway between

blue Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when ...

and

cyan Cyan () is the color between green and blue on the visible spectrum of light. It is evoked by light with a predominant wavelength between 490 and 520 nm, between the wavelengths of green and blue. In the subtractive color system, or CMYK col ...

. In the RGB color model, used to create all the colors on a television or computer screen, azure is created by adding a little green light to blue light. The

complementary color Complementary colors are pairs of colors which, when combined or mixed, cancel each other out (lose hue) by producing a grayscale color like white or black. When placed next to each other, they create the strongest contrast for those two ...

of azure is

orange Orange most often refers to: *Orange (fruit), the fruit of the tree species '' Citrus'' × ''sinensis'' ** Orange blossom, its fragrant flower * Orange (colour), from the color of an orange, occurs between red and yellow in the visible spectrum ...

Wrapping the spectrum into a color wheel

In a color proximity sense, a primary color has a color range of 120° (60° on each side of the color's hue) and any color has to be within that range to be considered a variation of that color. Secondary colors have a color range of 60° (30°), tertiary colors have a color range of 30° (15°), quaternary colors have a color range of 15° (7.5°), quinary colors have a color range of 7.5° (3.75°), and so on. Because azure is located at a hue angle of 210°, it has a tertiary color range of 195° and 225°, and any color out of this range is more related to

than azure. If the visible spectrum is wrapped to form a color wheel, azure (subtractive primary) appears midway between

and

, or violet and

spring green Spring green is a color that was traditionally considered to be on the yellow side of green, but in modern computer systems based on the RGB color model is halfway between cyan and green on the color wheel. The modern spring green, when plot ...

Distinction between indigo, azure and cyan

All of the colors shown below in the section ''variations of azure'' are referenced as having a

code of between 195 and 225 (the hue code is the ''h'' code in the

HSV color space HSL (for hue, saturation, lightness) and HSV (for hue, saturation, value; also known as HSB, for hue, saturation, brightness) are alternative representations of the RGB color model, RGB color model, designed in the 1970s by computer graphics res ...

), signifying that these colors are tones of azure. The only exception, as noted below, is the web color azure which, with a color code of 180, is actually a tone of

. Strictly speaking, according to the mathematical logic of the RGB color wheel,

indigo Indigo is a deep color close to the color wheel blue (a primary color in the RGB color space), as well as to some variants of ultramarine, based on the ancient dye of the same name. The word "indigo" comes from the Latin word ''indicum'', ...

colors are those colors with hue codes of between 255 and 225, azure colors are those colors with hue codes of between 195 and 225, and cyan colors are those colors with hue codes of between 150 and 210.

Azure (web color)

In the X11 color system which became a standard for early

web colors Web colors are colors used in Web design, displaying web pages on the World Wide Web, and the methods for describing and specifying those colors. Colors may be specified as an RGB color model, RGB triplet or in hexadecimal format (a ''hex triple ...

, azure is depicted as a pale cyan or whitish cyan rather than a shade of azure. In an artistic context, this color could also be called azure mist or cyan mist.

Variations of azure

In this section, the term shade is used in its technical sense as used in

color theory In the visual arts, color theory is the body of practical guidance for color mixing and the visual effects of a specific color combination. Color terminology based on the color wheel and its geometry separates colors into primary color, se ...

, meaning a

ish color mixed with

black Black is a color which results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white ha ...

or dark

gray Grey (more common in British English) or gray (more common in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it is "without color", because it can be composed ...

. The colors arranged in order of their value (brightness) (V in the HSV code), the brighter colors toward the top and the darker colors toward the bottom.

Alice blue

The web color Alice blue is a pale tint of azure.

Light sky blue

Displayed at right is the web color light sky blue.

Baby blue

Baby blue is known as one of the

pastel colors Pastels or pastel colors belong to a pale family of colors, which, when described in the HSV color space, have high value and low saturation. They are named after an artistic medium made from pigment and solid binding agents, similar to ...

. This color is associated with baby boys in

Western culture image:Da Vinci Vitruve Luc Viatour.jpg, Leonardo da Vinci's ''Vitruvian Man''. Based on the correlations of ideal Body proportions, human proportions with geometry described by the ancient Roman architect Vitruvius in Book III of his treatise '' ...

. The first recorded use of ''baby blue'' as a color name in

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national id ...

was in 1892.Maerz and Paul ''A Dictionary of Color'' New York:1930 McGraw-Hill Page 190; Color Sample of Baby Blue: Page 93 Plate 35 Color Sample E2

Sky blue

Displayed at right is the web color sky blue. Clouds Blue Sky 001

The first recorded use of ''sky blue'' as a color name in English was in 1728 in the ''Cyclopædia'' of

Ephraim Chambers Ephraim Chambers ( – 15 May 1740) was an English writer and encyclopaedist, who is primarily known for producing the '' Cyclopaedia, or a Universal Dictionary of Arts and Sciences''. Biography Chambers was born in Milton near Kendal, Westmo ...

. Prior to the Chambers reference, the color had first been used in 1585 in a book by Nicolas de Nicolay where he stated "the tulbant of the merchant must be ''skie coloured''".

Deep sky blue

Deep sky blue is an azure-

color associated with deep

sky blue Sky blue is a shade of light blue comparable to that of a clear daytime sky. The term (as "sky blew") is attested from 1681. A 1585 translation of Nicolas de Nicolay's 1576 ''Les navigations, peregrinations et voyages faicts en la Turquie'' i ...

. ''Deep sky blue'' (

Capri Capri ( , ; ; ) is an island located in the Tyrrhenian Sea off the Sorrento Peninsula, on the south side of the Gulf of Naples in the Campania region of Italy. The main town of Capri that is located on the island shares the name. It has bee ...

) is a

web color Web colors are colors used in displaying web pages on the World Wide Web, and the methods for describing and specifying those colors. Colors may be specified as an RGB triplet or in hexadecimal format (a ''hex triplet'') or according to their ...

. This color is on the

color wheel A color wheel or color circle is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms ''color wheel'' & ' ...

( RGB/HSV color wheel) halfway between azure and cyan. The traditional name for this color is Capri. The first use of ''Capri'' as a color name in English was in 1920. The color ''Capri'' in general is named for the azure-cyan color of the

Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ...

around the island of

off

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...

, the site of several villas belonging to the Roman Emperor

Tiberius Tiberius Julius Caesar Augustus (; 16 November 42 BC – 16 March AD 37) was the second Roman emperor. He reigned from AD 14 until 37, succeeding his stepfather, the first Roman emperor Augustus. Tiberius was born in Rome in 42 BC. His father ...

, including his imperial residence in his later years, the '' Villa Jovis''. Specifically, the color Capri is named after the color of the Blue Grotto on the island of Capri as it appears on a bright sunny day. Today the island of Capri is a resort island popular with

tourists Tourism is travel for pleasure or business; also the theory and practice of touring (disambiguation), touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tour (disambiguation), tours. Th ...

. The name ''deep sky blue'' for this color did not come into use until the promulgation of the X11 color list in 1987. The name ''Capri'' is still used for this color as well as the name ''deep sky blue''.

Cerulean

The first recorded use of ''cerulean'' as a color name in

was in 1590. The word is probably derived from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power ...

word ''caeruleus'', "dark blue, blue, or blue-green", which in turn probably derives from ''caelulum'', diminutive of ''caelum'', "heaven, sky".

Pale azure

Green-blue

Green-blue was a

Crayola Crayola LLC, formerly the Binney & Smith Company, is an American manufacturing company specializing in art supplies. It is known for its brand ''Crayola'' and best known for its crayons. The company is headquartered in Forks Township, Pennsylv ...

color from 1958 to 1990.

Maya blue

Maya blue was a pigment widely used by the

Mayan civilization The Maya civilization () of the Mesoamerican people is known by its ancient temples and glyphs. Its Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas. It is also noted for its art, arc ...

Jordy blue

At right is displayed the color jordy blue. The color name ''jordy blue'' has been in use since 2001, when this color was promulgated as one of the colors on th
Xona.com Color List

Columbia blue

Columbia blue is a medium light tone of azure named after

Columbia University Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manha ...

. The typical Columbia blue is defined by

Pantone Pantone LLC (stylized as PANTONE) is a limited liability company headquartered in Carlstadt, New Jersey. The company is best known for its Pantone Matching System (PMS), a proprietary color space used in a variety of industries, notably graph ...

Columbia Blue (PANTONE 290).

Picton blue

At right is displayed the color picton blue. The color name ''picton blue'' dates back to at least 2001, and came into wider use when the Resene Paints colors were used as one of the sources for the Xona Games Color List.

United Nations blue

Displayed at right is the color United Nations blue.

The color resembles the shade of blue seen on the flag of the

United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizi ...

Cornflower blue

At right is displayed the web color cornflower blue.

Bleu de France

The color bleu de France is displayed at right. ''Bleu de France'' is a color that has been associated in

heraldry Heraldry is a discipline relating to the design, display and study of armorial bearings (known as armory), as well as related disciplines, such as vexillology, together with the study of ceremony, rank and pedigree. Armory, the best-known bran ...

with the

Kings of France France was ruled by monarchs from the establishment of the Kingdom of West Francia in 843 until the end of the Second French Empire in 1870, with several interruptions. Classical French historiography usually regards Clovis I () as the fi ...

since the 12th century.

Dodger blue

At right is displayed the color Dodger blue.

Brandeis blue

Brandeis blue is the tone of azure used in association with

Brandeis University Brandeis University is a Private university, private research university in Waltham, Massachusetts. Founded in 1948 as a nonsectarian, non-sectarian, coeducational institution sponsored by the Jews, Jewish community, Brandeis was established on t ...

. The university administration defines Brandeis blue as corresponding to the

color of 294 or the process color of 100c 86m 14y w24k.

True blue

The color true blue is a deep tone of azure that is the color of the uniforms of the sports teams of

UCLA The University of California, Los Angeles (UCLA) is a public university, public Land-grant university, land-grant research university in Los Angeles, California. UCLA's academic roots were established in 1881 as a Normal school, teachers colle ...

. It is also one of the shades of blue used by the

Los Angeles Chargers The Los Angeles Chargers are a professional American football team based in the Los Angeles metropolitan area. The Chargers compete in the National Football League (NFL) as a member of the American Football Conference (AFC) West division, and ...

though they use the name powder blue.

Tang blue

The color tang blue is a deep tone of azure that is the color of royal blue tang fish.

Royal blue (web color)

The web color royal blue is a rich tone of azure.

Celestial blue

Displayed at right is the color celestial blue. The first recorded use of ''celestial blue'' as a color name in English was in 1535. The source of this color is the ''Plochere Color System'', a color system formulated in 1948 that is widely used by interior designers.

Vista blue

Displayed at right is the color vista blue. The source of this color is the "

Textile Paper eXtended (TPX)" color list, color #15-3930 TPX—Vista Blue.

Silver Lake blue

Displayed at right is the color Silver Lake blue. The source of this color is the "

Textile Paper eXtended (TPX)" color list, color #17-4030 TPX—Silver Lake Blue.

Tufts blue

Tufts blue is the tone of azure used in association with

Tufts University Tufts University is a private research university on the border of Medford and Somerville, Massachusetts. It was founded in 1852 as Tufts College by Christian universalists who sought to provide a nonsectarian institution of higher learnin ...

Honolulu blue

Honolulu blue is the tone of azure used in association with the

Detroit Lions The Detroit Lions are a professional American football team based in Detroit. The Lions compete in the National Football League (NFL) as a member of the National Football Conference (NFC) North Division. The team play their home games at For ...

football team.

Air Force blue

Displayed at right is the color air force blue, also known as RAF blue. This is the tone of ''air force blue'' used by the

Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) an ...

, the first air force to choose an "air force blue" color by which to identify itself, in 1920. The color "air force blue" is a medium tone of azure since it has a hue code of 204 which is a hue code between 195 and 225, signifying a tone of azure.

Steel blue

Steel blue is a grayish tone of azure that resembles the color blue steel, i.e., steel which has been subjected to bluing in order to protect it from

rust Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH), ...

. The first recorded use of ''steel blue'' as a color name in

was in 1817.

French blue

French blue is a deep azure color commonly used in quality men's

dress shirt A dress shirt, button shirt, button-front, button-front shirt, or button-up shirt, is a garment with a collar and a full-length opening at the front, which is fastened using buttons or shirt studs. A button-down or button-down shirt is a dre ...

s. According to the

Oxford English Dictionary The ''Oxford English Dictionary'' (''OED'') is the first and foundational historical dictionary of the English language, published by Oxford University Press (OUP). It traces the historical development of the English language, providing a com ...

, the first use of '' French Blue'' in English was in ''

The Times ''The Times'' is a British daily national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its current name on 1 January 1788. ''The Times'' and its sister paper '' The Sunday Times'' ...

'' of 1802.

Lapis lazuli

The color lapis lazuli is displayed at left. ''Lapis Lazuli'' is a color that is a representation of the most common color of

lapis lazuli Lapis lazuli (; ), or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color. As early as the 7th millennium BC, lapis lazuli was mined in the Sar-i Sang mine ...

Royal blue (traditional)

The traditional color called royal blue is a dark shade of azure.

Light blue

The

light blue is part of the X11 color system, with a hue code of 194. This color is closer to

than to blue. Variations of this color are known as

, baby blue, or angel blue. The first recorded use of "light blue" as a color term in English is in the year 1915.

Baby blue

Baby blue is known as one of the

pastel A pastel () is an art medium in a variety of forms including a stick, a square a pebble or a pan of color; though other forms are possible; they consist of powdered pigment and a binder. The pigments used in pastels are similar to those us ...

colors. With a hue code of 199, this color is a tone of azure. The first recorded use of ''baby blue'' as a color name in

was in 1892.

Blue (NCS) (psychological primary blue)

The color defined as ''blue'' in the NCS or

Natural Color System The Natural Color System (NCS) is a proprietary perceptual color model. It is based on the color opponency hypothesis of color vision, first proposed by German physiologist Ewald Hering. The current version of the NCS was developed by the S ...

is an azure-like color shown at right (NCS 2060-B). The Natural Color System is a color system based on the four

unique hues Unique hue is a term used in certain theories of color vision, which implies that human perception distinguishes between "unique" (psychologically primary) and composite (mixed) hues. A unique hue is defined as a color which an observer perceives ...

or psychological primary colors red, yellow, green, and blue. The NCS is based on the

opponent process The opponent process is a color theory that states that the human visual system interprets information about color by processing signals from photoreceptor cells in an antagonistic manner. The opponent-process theory suggests that there are thre ...

theory of vision. The “Natural Color System” is widely used in

Scandinavia Scandinavia; Sámi languages: /. ( ) is a subregion in Northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. In English usage, ''Scandinavia'' most commonly refers to Denmark, Norway, and Swe ...

Blue (Munsell)

The color defined as ''blue'' in the

Munsell color system In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), chroma (color intensity), and value (lightness). It was created by Professor Albert H. Munsell in the first ...

(Munsell 5B) is shown at right. The ''Munsell color system'' is a

color space A color space is a specific organization of colors. In combination with color profiling supported by various physical devices, it supports reproducible representations of colorwhether such representation entails an analog or a digital representa ...

that specifies

color Color (American English) or colour (British English) is the visual perceptual property deriving from the spectrum of light interacting with the photoreceptor cells of the eyes. Color categories and physical specifications of color are assoc ...

s based on three color dimensions:

, value (

lightness Lightness is a visual perception of the luminance (L) of an object. It is often judged relative to a similarly lit object. In colorimetry and color appearance models, lightness is a prediction of how an illuminated color will appear to a stand ...

), and chroma (color purity), spaced uniformly (according to the

logarithmic scale A logarithmic scale (or log scale) is a way of displaying numerical data over a very wide range of values in a compact way—typically the largest numbers in the data are hundreds or even thousands of times larger than the smallest numbers. Such a ...

which governs human perception) in three dimensions in the Munsell

color solid A color solid is the three-dimensional representation of a color model, an analog of the two-dimensional color wheel. The added spatial dimension allows a color solid to depict an added dimension of color variation. Whereas a two-dimensional ...

, which is shaped like an elongated oval at an angle. In order for all the colors to be spaced uniformly, it was found necessary to use a color wheel with five primary colors: red, yellow, green, blue, and purple. Munsell can only be displayed approximately on a computer screen, as these

spectral color A spectral color is a color that is evoked by '' monochromatic light'', i.e. either a single wavelength of light in the visible spectrum, or by a relatively narrow band of wavelengths (e.g. lasers). Every wavelength of visible light is perce ...

s have been adjusted to fit into the sRGB gamut. In the 21st century, this hue is classified as an intermediate between azure and

Uranian blue

Uranian blue is a light greenish blue, the color of

Uranus Uranus is the seventh planet from the Sun. Its name is a reference to the Greek god of the sky, Uranus (Caelus), who, according to Greek mythology, was the great-grandfather of Ares (Mars), grandfather of Zeus (Jupiter) and father of Cronu ...

Spanish blue

Spanish blue is the color that is called ''Azul'' (the

Spanish Spanish might refer to: * Items from or related to Spain: ** Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many Latin American countries **Spanish cuisine Other places * Spanish, Ontario, Ca ...

word for "blue") in the ''Guía de coloraciones'' (''Guide to colorations'') by Rosa Gallego and Juan Carlos Sanz, a color dictionary published in 2005 that is widely popular in the

Hispanophone Hispanophone and Hispanic refers to anything relating to the Spanish language (the Hispanosphere). In a cultural, rather than merely linguistic sense, the notion of "Hispanophone" goes further than the above definition. The Hispanic culture is t ...

realm. It is a shade of azure.

Argentinian blue

The web color Argentinian blue is a light azure color seen on the national flag of

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, t ...

Berkeley blue

Berkeley Blue is one of the official colors of the

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant u ...

, along with California Gold. Until 2007, the university had used Yale Blue in its place, given Berkeley's historical ties to

Yale University Yale University is a Private university, private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the List of Colonial Colleges, third-oldest institution of higher education in the United Sta ...

, particularly in its founding. Berkeley's

school colors School colors (also known as university colors or college colors) are the colors chosen by a school as part of its brand identity, used on building signage, web pages, branded apparel, and the uniforms of sports teams. They can promote connectio ...

are the originators for those of all the campuses in the

University of California The University of California (UC) is a public land-grant research university system in the U.S. state of California. The system is composed of the campuses at Berkeley, Davis, Irvine, Los Angeles, Merced, Riverside, San Diego, San Fran ...

system, of which Berkeley is the oldest as its

flagship A flagship is a vessel used by the commanding officer of a group of naval ships, characteristically a flag officer entitled by custom to fly a distinguishing flag. Used more loosely, it is the lead ship in a fleet of vessels, typically the f ...

Blue (Crayola)

Blue (Crayola) is the color called ''blue'' in

crayons. "Blue" was one of the original Crayola crayons formulated in 1903.

Ruddy blue

Ruddy blue represents the coloring of the beak of the

ruddy duck The ruddy duck (''Oxyura jamaicensis'') is a duck from North America and one of the stiff-tailed ducks. The genus name is derived from Ancient Greek ''oxus'', "sharp", and ''oura'', "tail", and ''jamaicensis'' is "from Jamaica". Taxonomy The ...

. It is a light shade of azure. Ruddy Duck (25508491104)

Celtic blue

Celtic blue is a shade of blue, also known as ''glas celtig'' in Welsh, or ''gorm ceilteach'' in both the

Irish language Irish (an Caighdeán Oifigiúil, Standard Irish: ), also known as Gaelic, is a Goidelic languages, Goidelic language of the Insular Celtic branch of the Celtic language family, which is a part of the Indo-European languages, Indo-European lang ...

and in

Scottish Gaelic Scottish Gaelic ( gd, Gàidhlig ), also known as Scots Gaelic and Gaelic, is a Goidelic language (in the Celtic branch of the Indo-European language family) native to the Gaels of Scotland. As a Goidelic language, Scottish Gaelic, as well a ...

. Julius Caesar reported (in

Commentarii de Bello Gallico ''Commentarii de Bello Gallico'' (; en, Commentaries on the Gallic War, italic=yes), also ''Bellum Gallicum'' ( en, Gallic War, italic=yes), is Julius Caesar's firsthand account of the Gallic Wars, written as a third-person narrative. In it ...

) that the Britanni used to colour their bodies blue with vitrum, a word that means primarily "glass", but also the domestic name for the "

woad ''Isatis tinctoria'', also called woad (), dyer's woad, or glastum, is a flowering plant in the family Brassicaceae (the mustard family) with a documented history of use as a blue dye and medicinal plant. Its genus name, Isatis, derives from ...

" (''Isatis tinctoria''), besides the

Gaulish Gaulish was an ancient Celtic language spoken in parts of Continental Europe before and during the period of the Roman Empire. In the narrow sense, Gaulish was the language of the Celts of Gaul (now France, Luxembourg, Belgium, most of Switzerl ...

loanword ''glastum'' (from

Proto-Celtic Proto-Celtic, or Common Celtic, is the ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly reconstructed through the comparative method. Proto-Celt ...

*glastos "green"). The connection seems to be that both glass and the woad are "water-like" (lat. vitrum is from

Proto-Indo-European Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. Its proposed features have been derived by linguistic reconstruction from documented Indo-European languages. No direct record of Proto-Indo- ...

*wed-ro- "water-like").

Polynesian blue

Polynesian blue is a dark blue color, almost navy.

Moroccan Blue

Moroccan blue (also Chefchaouen blue) is a vivid blue color.

Yale Blue

Yale Blue is the dark azure color used in association with

. The hue of Yale Blue is one of the two official colors of

Indiana State University Indiana State University (ISU) is a public university in Terre Haute, Indiana. It was founded in 1865 and offers over 100 undergraduate majors and more than 75 graduate and professional programs. Indiana State is classified among "D/PU: Doctor ...

, the

University of Mississippi The University of Mississippi ( byname Ole Miss) is a public research university that is located adjacent to Oxford, Mississippi, and has a medical center in Jackson. It is Mississippi's oldest public university and its largest by enrollment. ...

, and

Southern Methodist University , mottoeng = " The truth will make you free" , established = , type = Private research university , accreditation = SACS , academic_affiliations = , religious_affiliation = United Methodist Church , president = R. Gerald Turner , pr ...

. The official color "DCU Blue" of

Dublin City University Dublin City University (abbreviated as DCU) ( ga, Ollscoil Chathair Bhaile Átha Cliath) is a Third-level education in the Republic of Ireland, university based on the Northside, Dublin, Northside of Dublin, Republic of Ireland, Ireland. Cre ...

is very close to Yale Blue. Yale Blue was also an official color of

and Duke University.

Penn blue

Penn Blue is one of the official colors of the

University of Pennsylvania The University of Pennsylvania (also known as Penn or UPenn) is a private research university in Philadelphia. It is the fourth-oldest institution of higher education in the United States and is ranked among the highest-regarded universit ...

, along with Penn Red. While the school colors were defined by 1910, university history points to earlier times when the colors may have been chosen, including a possible visit by George Washington to the University, where students used the color of his tunic to determine school colors or a track meet where Penn athletes declared that they would wear the colors "of the teams we beat," which would be those of both

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of high ...

and

. Originally defined as the colors used on the

American flag The national flag of the United States of America, often referred to as the ''American flag'' or the ''U.S. flag'', consists of thirteen equal horizontal stripes of red (top and bottom) alternating with white, with a blue rectangle in the c ...

, the colors have since deviated.

Sapphire

Sapphire is a deep shade of navy blue, based on the color of an average

sapphire Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide () with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium. The name sapphire is derived via the Latin "sap ...

gemstone. However, sapphires can also be pink, yellow, or orange.

Delft blue

Delft blue is a dark blue color. The name is derived from the Dutch pottery

Delftware Delftware or Delft pottery, also known as Delft Blue ( nl, Delfts blauw) or as delf, is a general term now used for Dutch tin-glazed earthenware, a form of faience. Most of it is blue and white pottery, and the city of Delft in the Netherlands ...

, also known simply as "Delft Blue".

Resolution blue

Resolution blue is a vivid blue color. This color name first came into use in 2001 when it was formulated as one of the colors on th
Xona.com Color List

References

{{Color topics Shades of Blue Shades of Cyan

Wrapping the spectrum into a color wheel

Distinction between indigo, azure and cyan

Azure (web color)

Variations of azure

Alice blue

Light sky blue

Baby blue

Sky blue

Deep sky blue

Cerulean

Pale azure

Green-blue

Maya blue

Jordy blue

Columbia blue

Picton blue

United Nations blue

Cornflower blue

Bleu de France

Dodger blue

Brandeis blue

True blue

Tang blue

Royal blue (web color)

Celestial blue

Vista blue

Silver Lake blue

Tufts blue

Honolulu blue

Air Force blue

Steel blue

French blue

Lapis lazuli

Royal blue (traditional)

Light blue

Baby blue

Blue (NCS) (psychological primary blue)

Blue (Munsell)

Uranian blue

Spanish blue

Argentinian blue

Berkeley blue

Blue (Crayola)

Ruddy blue

Celtic blue

Polynesian blue

Moroccan Blue

Yale Blue

Penn blue

Sapphire

Delft blue

Resolution blue

See also

References