Color Theory is the musical alter ego of American singer-keyboardist-songwriter Brian Hazard. Hazard has released eight studio albums, nine EPs, three remix collections, and one set of demos to date. His latest EP Adjustments, Pt. 3 was released on November 13, 2015.

In the visual arts, color theory is a body of practical guidance to color mixing and the visual effects of a specific color combination. There are also definitions (or categories) of colors based on the color wheel: primary color, secondary color and tertiary color. Although color theory principles first appeared in the writings of Leone Battista Alberti (c.1435) and the notebooks of Leonardo da Vinci (c.1490), a tradition of "colory theory" began in the 18th century, initially within a partisan controversy around Isaac Newton's theory of color (Opticks, 1704) and the nature of primary colors. From there it developed as an independent artistic tradition with only superficial reference to colorimetry and vision science.