Traditionally, the complementary color of yellow is purple; the two colors are opposite each other on the color wheel long used by painters.[13] Vincent van Gogh, an avid student of color theory, used combinations of yellow and purple in several of his paintings for the maximum contrast and harmony.[14] Hunt defines that "two colors are complementary when it is possible to reproduce the tristimulus values of a specified achromatic stimulus by an additive mixture of these two stimuli."[15] Tha...