Definition of secondary color

A color produced by mixing two additive primary colors in equal proportions. The secondary colors are cyan (a mixture of blue and green), magenta (a mixture of blue and red), and yellow (a mixture of green and red). Each secondary color is also thecomplementary color (or complement) of the primary color whose wavelength it does not contain. Thus cyan is the complement of red, magenta is the complement of green, and yellow is the complement of blue