In the past, my color theory classes consisted of mixing paint and perfect a certain hue, which could take hours at a time to do. And even though these classes were fun and taught me well, I love color theory in design much better. The Pantone Color System is fantastic. With this system, anyone using it can be certain that they have a specific shade of color.
Color combination is important in design, not only aesthetically, but in terms of communicating. Choosing the correct colors can either enhance or hinder the message being communicated. Color interacts with the design as a whole, not in just specific areas. Knowing the function of a color palette and the correct way to use it, is a crucial part of design.
The color Harmonies:
Complementary: Two colors opposite each other on the color wheel
Split Complementary: A three color scheme in which one color is accompanied by two others that are spaced equally from the firsts color's compliment
Double Complementary: The paring of two sets of complementary colors
Analogous: A combination of two or more colors equally spaced on the color wheel
Triadic: Any three colors that are evenly space around the color wheel.