Source: Color Wheel, Fair Use http://classicshades.com/articles-colorwheel Photo of Josef Albers, Fair Use Simultaneous Contrast, Fair Use http://www.tumblr.com/tagged/simultaneous-contrast
Hues which are next to each other on the color wheel; analogous colors on one side of the color wheel are considered warm and on the other, cool.
Two hues which sit directly opposite each other on the color wheel.
American artist, teacher and author of the "Interaction of Color"; he wrote one of the most important books on perception and the study of color theory.
The effect two neighboring colors have on one another; this effect is contained in one of Albers' laws of interaction.
A combination of three colors, consisting of a main hue and the two hues that sit on either side of its complement on the color wheel.