primary subtractive colour for light

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Noun1.primary subtractive colour for light - any of the three colors that give the primary colors for light after subtraction from white light; "the primary subtractive colors for light are magenta, cyan, and yellow"
primary color for light, primary colour for light - any of three primary colors of light from which all colors can be obtained by additive mixing; "the primary colors for light are red, blue, and green"