Any pair of colours that produce white or grey when mixed in the correct proportions. There is an infinite number of such complementary pairs, but the following typical examples can be read off the CIE colour system diagram: red (650 nanometres) and blue-green or cyan (495 nm); yellow (580 nm) and blue (480 nm); green (535 nm) and deep bluish purple or magenta (a 2 : 5 mixture of blue and red). US complementary colors. See also colour assimilation, colour circle, colour contrast, Purkinje image.
Subjects: Art — Psychology.