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Color Harmony
In color theory, color harmony refers to the property that certain aesthetically pleasing color combinations have. These combinations create pleasing contrasts and consonances that are said to be harmonious. These combinations can be of complementary colors, split-complementary colors, color triads, or analogous colors. Color harmony has been a topic of extensive study throughout history, but only since the Renaissance and the Scientific Revolution has it seen extensive codification. Artists and designers make use of these harmonies in order to achieve certain moods or aesthetics. Types Several patterns have been suggested for predicting which sets of colors will be perceived as harmonious. One difficulty with codifying such patterns is the variety of color spaces and color models that have been developed. Different models yield different pairs of complementary colors and so forth, and the degree of harmony of sets derived from each color space is largely subjective. Despit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Theory
Color theory, or more specifically traditional color theory, is a historical body of knowledge describing the behavior of colors, namely in color mixing, color contrast effects, color harmony, color schemes and color symbolism. Modern color theory is generally referred to as color science. While there is no clear distinction in scope, traditional color theory tends to be more subjective and have artistic applications, while color science tends to be more objective and have functional applications, such as in chemistry, astronomy or color reproduction. Color theory dates back at least as far as Aristotle's treatise ''On Colors'' and Bharata_(sage), Bharata's Natya_Shastra, Nāṭya Shāstra. A formalization of "color theory" began in the 18th century, initially within a partisan controversy over Isaac Newton's theory of color (''Opticks'', 1704) and the nature of primary colors. By the end of the 19th century, a schism had formed between traditional color theory and color science ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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'' and ''color circle'' interchangeably; however, one term or the other may be more prevalent in certain fields or certain versions as mentioned above. For instance, some reserve the term ''color wheel'' for mechanical rotating devices, such as color triangle, color tops, filter wheels or the Newton disc. Others classify various color wheels as ''color disc'', ''color chart'', and ''color scale'' varieties. History The color wheel dates back to Isaac Newton's work on color and light. In his book ''Opticks'', Newton presented a color circle to illustrate the relations between these colors. The original color circle of Isaac Newton showed only the spectral hues and was provided to illustrate a rule for the color of mixtures of lights, that these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HSV Color Space
HSL and HSV are the two most common cylindrical-coordinate representations of points in an RGB color model. The two representations rearrange the geometry of RGB in an attempt to be more intuitive and perceptually relevant than the cartesian (cube) representation. Developed in the 1970s for computer graphics applications, HSL and HSV are used today in color pickers, in image editing software, and less commonly in image analysis and computer vision. HSL stands for ''hue'', ''saturation'', and ''lightness'', and is often also called HLS. HSV stands for ''hue'', ''saturation'', and ''value'', and is also often called HSB (''B'' for ''brightness''). A third model, common in computer vision applications, is HSI, for ''hue'', ''saturation'', and ''intensity''. However, while typically consistent, these definitions are not standardized, and any of these abbreviations might be used for any of these three or several other related cylindrical models. (For technical definitions of these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theory Of Painting
The idea of founding a theory of painting after the model of music theory was suggested by Goethe in 1807 and gained much regard among the avant-garde artists of the 1920s, the Weimar culture period, like Paul Klee. From Goethe to Klee Goethe famously said in 1807 that painting "lacks any established, accepted theory as exists in music". Moshe Barasch (2000) Theories of art – from impressionism to Kandinsky', part IV 'Abstract art', chap. 'Color' pp. 332–3 Kandinsky in 1911 reprised Goethe, agreeing that painting needed a solid foundational theory, and such a theory should be patterned after the model of music theory, and adding that there is a deep relationship between all the arts, not only between music and painting. The comparison of painting with music gained much regard among the avant-garde artists of the 1920s, the Weimar culture period, like Paul Klee. Marcel Franciscono ''Paul Klee: His Work and Thought'', part 6 'The Bauhaus and Düsseldorf', chap. 'Klee's theory co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subtractive Color
Subtractive color or subtractive color mixing predicts the spectral power distribution of light after it passes through successive layers of partially absorbing media. This idealized model is the essential principle of how dyes and pigments are used in color printing and photography, where the perception of color is elicited after white light passes through microscopic "stacks" of partially absorbing media, allowing some wavelengths of light to reach the eye and not others. It is also a concept seen in painting, wherein the colors are mixed or applied in successive layers. Process The subtractive color mixing model predicts the resultant spectral power distribution of light filtered through overlaid partially absorbing materials on a reflecting or transparent surface. Each layer partially absorbs some wavelengths of light from the illumination spectrum while letting others pass through, resulting in a colored appearance. The resultant spectral power distribution is predicted b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Additive Color
Additive color or additive mixing is a property of a color model that predicts the appearance of colors made by coincident component lights, i.e. the perceived color can be predicted by summing the numeric representations of the component colors. Modern formulations of Grassmann's laws describe the additivity in the color perception of light mixtures in terms of algebraic equations. Additive color predicts perception and not any sort of change in the photons of light themselves. These predictions are only applicable in the limited scope of color matching experiments where viewers match small patches of uniform color isolated against a gray or black background. Additive color models are applied in the design and testing of electronic displays that are used to render realistic images containing diverse sets of color using phosphors that emit light of a limited set of primary colors. Examination with a sufficiently powerful magnifying lens will reveal that each pixel in CRT, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Albert Keeley
Charles Albert Keeley (1 December 1821 – 11 August 1889) was a British inventor, amateur scientist, entertainer and pioneering colour expert. He is most famous for his 'Colour Conundrum' parlour game, and is considered by many to be one of Victorian Britain's most significant colour theorists. Early life Keeley was born in Bristol, the son of a local clergyman. Performance Work Inspired by the work of French chemist and colour theorist Eugene Chevreul, Keeley was a regular performer at the London Royal Polytechnic in the 1860s, which was chaired by distinguished scientist and aeronautical engineer Sir George Cayley. Keeley became famous for an innovative form of magic lantern display in which abstract colour slides replaced the normal representational and narrative forms. By employing geometric and repetitive patterns his projections had the effect of producing afterimages in the eyes of his audiences (it may be that Keeley was familiar with studies of the afterimage ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Mixing
There are three types of color mixing models, depending on the relative brightness of the resultant mixture: ''additive'', ''subtractive'', and ''average''. In these models, mixing black and white will yield white, black and gray, respectively. Physical mixing processes, e.g. mixing light beams or oil paints, will follow one or a hybrid of these 3 models. Each mixing model is associated with several color models, depending on the approximate primary colors used. The most common color models are optimized to human trichromacy, trichromatic color vision, therefore comprising three primary colors. Mixing models Additive model Additive mixing combines two or more colors into a mixture with brightness equal to the ''sum'' of the components' brightnesses. An ideal physical model to demonstrate the additive model comprises two superimposed colored lights aimed at the observer. The additive model is usually demonstrated by reflecting two beams of colored light off a white, matte surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
