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  2. Munsell color system - Wikipedia

    en.wikipedia.org/wiki/Munsell_color_system

    The Munsell color system, showing: a circle of hues at value 5 chroma 6; the neutral values from 0 to 10; and the chromas of purple-blue (5PB) at value 5. In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), value , and chroma (color intensity

  3. Color theory - Wikipedia

    en.wikipedia.org/wiki/Color_theory

    Color theory asserts three pure primary colors that can be used to mix all possible colors. These are sometimes considered as red, yellow and blue or as red, green and blue . [citation needed] Ostensibly, any failure of specific paints or inks to match this ideal performance is due to the impurity or imperfection of the colorants.

  4. Graph coloring - Wikipedia

    en.wikipedia.org/wiki/Graph_coloring

    With only two colors, it cannot be colored at all. With four colors, it can be colored in 24 + 4 × 12 = 72 ways: using all four colors, there are 4! = 24 valid colorings (every assignment of four colors to any 4-vertex graph is a proper coloring); and for every choice of three of the four colors, there are 12 valid 3-colorings. So, for the ...

  5. Hue - Wikipedia

    en.wikipedia.org/wiki/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 are described as red, orange, yellow, green, blue, violet," [1] within certain theories of color vision.

  6. Color mixing - Wikipedia

    en.wikipedia.org/wiki/Color_mixing

    The most common additive color model is the RGB color model, which uses three primary colors: red, green, and blue. This model is the basis of most color displays. Some modern displays are Multi-primary color displays, which have 4-6 primaries (RGB, plus cyan, yellow and/or magenta) in order to increase the size of the color gamut. For all ...

  7. YCoCg - Wikipedia

    en.wikipedia.org/wiki/YCoCg

    The three values of the YCoCg color model are calculated as follows from the three color values of the RGB color model: [2] [] = [] [] The values of Y are in the range from 0 to 1, while Co and Cg are in the range of −0.5 to 0.5, as is typical with "YCC" color models such as YCbCr.

  8. Edge coloring - Wikipedia

    en.wikipedia.org/wiki/Edge_coloring

    The complete bipartite graph K 3,3 with each of its color classes drawn as parallel line segments on distinct lines. Folkman & Fulkerson (1969) investigated the non-increasing sequences of numbers m 1, m 2, m 3, ... with the property that there exists a proper edge coloring of a given graph G with m 1 edges of the first color, m 2 edges of the ...

  9. Additive color - Wikipedia

    en.wikipedia.org/wiki/Additive_color

    James Clerk Maxwell, with his color top that he used for investigation of color vision and 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 ...