Compliment - Colors that are directly opposite each other on the color wheel. A primary color is complimentary to a secondary color that is a mixture of the two remaining primaries. Split compliment - A color and the two colors on either side of it's compliment. Temperature - Generally, those colors on the color wheel that are influenced by red are considered warm. Colors influenced by blue are cool.
Warm colors tend to advance in a spatial relationship with cool colors which tend to recede.
Clash - The result of colors placed together sharing few common chromatic characteristics or none at all. The qualities of analogousness or progression would also not be present. Discord - The result when one or both of the colors in a complimentary or split complimentary relationship are tinted or shaded so that their natural value relationship is reversed. Simultaneous contras t - Intensified contrast that results when two different colors come into direct contact. The perception of colors seen in situations of simultaneous contrast is often altered.