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A secondary color is a color made by mixing two primary colors in a given color space. Examples include the following:

Additive secondaries[]

Main article: Additive color

Light (RGB)[]

Main article: RGB color model
     
red (●) + green (●) = yellow (●)
green (●) + blue (●) = cyan (●)
blue (●) + red (●) = magenta (●)
 

Subtractive secondaries[]

Main article: Subtractive color

Pigment (CMY)[]

Main article: CMYK color model
     
cyan (●) + magenta (●) = blue (●)
magenta (●) + yellow (●) = red (●)
yellow (●) + cyan (●) = green (●)
 

This is often referred to as CMYK where K stands for Key (usually black). In theory, solid overlapping layers of C, M, and Y ink produce black. In reality the outcome is dirty brown unless mixed exactly evenly so the black ink replaces the other three layers. See under color removal.

Traditional painting (RYB)[]

Main article: RYB color model
     
red (●) + yellow (●) = orange (●)
yellow (●) + blue (●) = green (●)
blue (●) + red (●) = violet (●)
 

RYB uses pigments, similar to CMY, which combine subtractively by absorbing light. Thus, combining colors using the RYB color system will result in a darker color.

See also[]

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