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In painting color theory, a hue refers to a pure color —one without added white (tint) or black (shade) pigment. In an RGB color space, hue can be thought of as an angle φ in standard position. To calculate φ, let R, G, B be the color coordinates in RGB space, defined on a scale from zero to one. Then, after obtaining the brightness μ and the saturation σ, the hue could be obtained from (Compare with standard score). Using this formula, φ=0 (in radians) would correspond to red, while φ=2π/3 would correspond to blue, and φ=4π/3 would correspond to green.

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  • Hue
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  • In painting color theory, a hue refers to a pure color —one without added white (tint) or black (shade) pigment. In an RGB color space, hue can be thought of as an angle φ in standard position. To calculate φ, let R, G, B be the color coordinates in RGB space, defined on a scale from zero to one. Then, after obtaining the brightness μ and the saturation σ, the hue could be obtained from (Compare with standard score). Using this formula, φ=0 (in radians) would correspond to red, while φ=2π/3 would correspond to blue, and φ=4π/3 would correspond to green.
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abstract
  • In painting color theory, a hue refers to a pure color —one without added white (tint) or black (shade) pigment. In an RGB color space, hue can be thought of as an angle φ in standard position. To calculate φ, let R, G, B be the color coordinates in RGB space, defined on a scale from zero to one. Then, after obtaining the brightness μ and the saturation σ, the hue could be obtained from (Compare with standard score). Using this formula, φ=0 (in radians) would correspond to red, while φ=2π/3 would correspond to blue, and φ=4π/3 would correspond to green. The RGB coordinates should be derivable from the μ, σ, φ coordinates as follows: Hue is a coordinate (an angle of rotation) in HSL color space and HSV color space.
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