Color or colour [1] is the perception of the frequency (or wavelength) of light, and can be compared to how pitch (or a musical note) is the perception of the frequency or wavelength of sound. It is a perception that, in humans, derives from the ability of the fine structures of the eye to provide the brain with differently filtered analyses of a view (usually three). The perception of color is influenced by biology (some people are born ...

Including:

Color - Physics of color
Color - Important note Color - Spectral versus non-spectral colors Color - Physical basis of color
Color - Color vision
Color - Clinical issues Color - Tetrachromat
Color - Color perception
Color - Effect of luminosity Color - Cultural influences Color - Color constancy Color - Contrast
Color - Measurement and reproduction of color
Color - Pigments and reflective media Color - Structural color
Color - Footnotes

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Including:

Colored - People of Color Colored - Coloured

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The colors of the visible light spectrum. Continuous optical spectrum Designed for monitors with gamma 1.5. Computer "spectrum" The bars below show the relative intensities of the three colors mixed to make the color immediately above. Color, frequency, and energy of light. Electromagnetic radiation is characterized by its wavelength (or frequency) and the intensity or number of photons at each different wavelength. When this r ...

See also:

Color, Color - Physics of color, Color - Important note, Color - Spectral versus non-spectral colors, Color - Physical basis of color, Color - Color vision, Color - Clinical issues, Color - Tetrachromat, Color - Color perception, Color - Effect of luminosity, Color - Cultural influences, Color - Color constancy, Color - Contrast, Color - Measurement and reproduction of color, Color - Pigments and reflective media, Color - Structural color, Color - Footnotes

Read more here: » Color: Encyclopedia II - Color - Physics of color

There is an interesting phenomenon which occurs when an artist uses a limited color palette: the eye tends to compensate by seeing any grey or neutral color as the color which is missing from the color wheel. E.g.: in a limited palette consisting of red, yellow, black, and white, a mixture of yellow and black will appear as a variety of green, a mixture of red and black will appear as a variety of ...

See also:

Color, Color - Physics of color, Color - Important note, Color - Spectral versus non-spectral colors, Color - Physical basis of color, Color - Color vision, Color - Clinical issues, Color - Tetrachromat, Color - Color perception, Color - Effect of luminosity, Color - Cultural influences, Color - Color constancy, Color - Contrast, Color - Measurement and reproduction of color, Color - Pigments and reflective media, Color - Structural color, Color - Footnotes

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Though the exact status of color is a matter of current philosophical dispute, color is arguably a psychophysical phenomenon that exists only in our minds. (See Qualia, for some of that dispute.) A "red" apple does not give off "red light", and it is misleading to think of things that we see, or of light itself, as objectively colored at all. Rather, the apple simply absorbs light of various wavelengths shining on it to different degrees, in such a way that the unabsorbed light which it reflects is perceived as red. An apple is perceived< ...

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Color, Color - Physics of color, Color - Important note, Color - Spectral versus non-spectral colors, Color - Physical basis of color, Color - Color vision, Color - Clinical issues, Color - Tetrachromat, Color - Color perception, Color - Effect of luminosity, Color - Cultural influences, Color - Color constancy, Color - Contrast, Color - Measurement and reproduction of color, Color - Pigments and reflective media, Color - Structural color, Color - Footnotes

Read more here: » Color: Encyclopedia II - Color - Color vision

Two different light spectra which have the same effect on the three color receptors in the human eye will be perceived as the same color. This is exemplified by the white light that is emitted by fluorescent lamps, which typically has a spectrum consisting of a few narrow bands, while daylight has a continuous spectrum. The human eye cannot tell the difference between such light spectra just by looking into the light source, although reflected colors from objects can look different. (This is often exploited e ...

See also:

Color, Color - Physics of color, Color - Important note, Color - Spectral versus non-spectral colors, Color - Physical basis of color, Color - Color vision, Color - Clinical issues, Color - Tetrachromat, Color - Color perception, Color - Effect of luminosity, Color - Cultural influences, Color - Color constancy, Color - Contrast, Color - Measurement and reproduction of color, Color - Pigments and reflective media, Color - Structural color, Color - Footnotes

Read more here: » Color: Encyclopedia II - Color - Measurement and reproduction of color

A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components. When this model is associated with a precise description of how the components are to be interpreted (viewing conditions, etc.), the resulting set of colors is called a color space. This section describes ways in which human color vision can be modeled. Color models - Tristimulus color space. The human tristimulus color space. < ...

Including:

Color models - Tristimulus color space Color models - Tristimulus color space as a mathematical projection Color models - CIE XYZ color space Color models - RGB color space Color models - CMYK color model Color models - HLS color space Color models - HSV color space Color models - Color systems

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lime The web color named lime actually corresponds to pure green on an RGB display: it has a different HTML color code (#00FF00). A sample can be seen to the right. ...

See also:

Lime color, Lime color - Web color

Read more here: » Lime color: Encyclopedia II - Lime color - Web color

Aquamarine is a color, a shade between green and cyan. It is named for the mineral aquamarine. This color represents the Bloc Québécois federal party of Canada. See also. List of colors ...

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The color champagne is a name given for several pale shades of yellow or beige. The color's name is derived from the typical color of the beverage Champagne. This color is most often used to describe gem stones, horses, or paint finishes (such as for an automobile). Other related archivesChampagne, automobile, beige, gem, horses, paint, yellow

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Carmine is the general term for a particularly deep red color. Rubies are carmine. The name is often applied to descriptions of blood. See also. list of colors ...

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Color blindness, or color vision deficiency, in humans is the inability to perceive differences between some or all colors that other people can distinguish. It is most often of genetic nature, but may also occur because of eye, nerve, or brain damage, or due to exposure to certain chemicals. The English chemist John Dalton in 1794 published the first scientific paper on the subject, "Extraordinary facts relating to the vision of colors", after the realization of his own color blindness; because of Dalton's work, the condition is sometimes called Daltonism, although this term is now used for a type of c ...

Including:

Color blindness - Prevalence Color blindness - Causes of color blindness Color blindness - Classification of color deficiencies
Color blindness - Red-green color blindness Color blindness - Blue-yellow color blindness Color blindness - Monochromacy
Color blindness - Diagnosis Color blindness - Treatment and management Color blindness - Design implications of color blindness Color blindness - Misconceptions & Compensations

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Subtractive color explains the theory of mixing paints, dyes, inks, and natural colorants to create colors which absorb some wavelengths of light and reflect others. The color that an object appears to have is based on what parts of the electromagnetic spectrum are reflected by it, or conversely by what parts of the spectrum are not absorbed. Anything that is not additive color is subtractive color. Color is not an absolute, but depends on the details of human color vision, which varies between individuals. Although color can be measured by instruments, such instrument ...

Including:

Subtractive color - Limitations

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Azure is a blue color, about halfway between blue and cyan, which describes the color of a cloudless sky. The term "Azur" is often used in France to describe the Mediterranean Sea. Azure is a tincture in heraldry. See also. List of colors ...

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Color constancy is an example of subjective constancy and a feature of the human color-perception system which ensures that the perceived color of objects remains relatively constant under varying illumination conditions. An apple for instance looks green to us at midday, when the main illumination is white sunlight, and also at sunset, when the main illumination is red. This helps us identify objects. Some nonhuman species, such as monkeys and goldfish have also been shown to have color constancy. It is likely th ...

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A color name is a linguistic label that humans attach to a color. Such a color is determined by a physical color and/or some other physical features like reflection or iridescence. Sometimes naming of colors is limited only to describe the feature of a physical color. Naming of colors is dependent on a specific language. There can be a vast and complex system representing determination of a color in a given language. Generally, naming of color ...

Including:

Color name - Regularity Color name - Standardized systems

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Cardinal is a vivid red, which gets its name from the cassocks worn by Catholic cardinals. Cardinal is also the "official" color of the Stanford Cardinal and one of the school colors of Brown University. Cardinal color - Other color systems. The corresponding Pantone Matching System (PMS) color is 200. The hex triplet for the web-safe version of the color would be #CC2233. List of colors See also. List of colors ...

Including:

Cardinal color - Other color systems

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Complementary colors are pairs of colours that are in some way opposites of each other. In color science there is a strict definition of complementary color, while in art and design the concept is often vague. Complementary color - Color science. In color science, two colors are called complementary if, when mixed they produce a shade of grey (including white, or even black in a subtractive system). There are 4 main pairs: black and white red and cyan green and ...

Including:

Complementary color - Color science Complementary color - Art and design

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A way to color atoms when visualizing molecular models, inspired by CPK plastic molecule model kits by Corey, Pauling and Kultun. [1] Other related archives

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In astronomy, color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. To measure the index one observes the magnitude of an object successively through two different filters - such as U and B, or B and V, where U is sensitive to ultraviolet rays, B is sensitive to blue light, and V is sensitive to visible (green-yellow) light. The difference in magnitudes found with these filters is called the U-B or B-V color index, respectively. The smaller the co ...

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