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Wikipedia uses a standardized set of color coordinate systems in color infobox (sample shown) and also in articles such as List of colors. Color coordinate ranges are a matter of choice and there is no universal standard range for many color spaces (though some ranges may be prevalent). A box having all of the different possible coordinate ...
The Practical Color Coordinate System (PCCS) is a discrete color space indexed by hue and tone. It was developed by the Japan Color Research Institute. [1
White is the lightest tint and a balanced combination of all the colors of the visible light spectrum, or of a pair of complementary colors, or of three or more colors, such as additive primary colors. It is a neutral or achromatic (without color) color, like black and gray
A comparison between a typical normalized M cone's spectral sensitivity and the CIE 1931 luminosity function for a standard observer in photopic vision. In the CIE 1931 model, Y is the luminance, Z is quasi-equal to blue (of CIE RGB), and X is a mix of the three CIE RGB curves chosen to be nonnegative (see § Definition of the CIE XYZ color space).
Other coordinate systems on the same X-Y-Z triangle, or other color triangles, can be used. On the other hand, some color spaces such as RGB and XYZ do not separate out chromaticity, but chromaticity is defined by a mapping that normalizes out intensity , and its coordinates, such as r and g or x and y , can be calculated through the division ...
Physical descriptions of color can be additive (describes mixing of light, RGB) or subtractive (describes mixing of pigment or removal of light, CMYK). Descriptions based on human perception are based on some experimental results on humans. Some models and their variants are employed in parts of the color spaces listed below. [1]
"Shades" of Colors—all color differences, not only technical tints and shades of color. ... Color chart; Color term; History of Crayola crayons;
Color chips or color samples from a plastic pellet manufacturer that enables customers to evaluate the color range as molded objects to see final effects. A color chart or color reference card is a flat, physical object that has many different color samples present. They can be available as a single-page chart, or in the form of swatchbooks or ...