Is it complementary or complimentary?

Examples of complementary color combinations are: Red and green; yellow and purple; orange and blue; green and magenta Complementary color

In the traditional RYB color model, the complementary color pairs are red–green, yellow–purple, and blue–orange Opponent process theory suggests

complementary Complementary is an adjective used to describe something that complements something else—goes along with it and serves to make it better or complete it (as in

complementary Complementary definition: Forming or serving as a complement; completing