Johannes Itten, of the Bauhaus, is the go to guy for colour theory, both these books are fantastic:

The Art of Color: The Subjective Experience and Objective Rationale of Color

http://www.amazon.com/Art-Color-Subjective-Experience-Object...

The Elements of Color: A Treatise on the Color System of Johannes Itten Based on His Book the Art of Color

http://www.amazon.com/Elements-Color-Treatise-System-Johanne...