This document provides an overview of color theory concepts, including: 1. It introduces the additive and subtractive color systems, and notes that designers typically use the additive system of red, green, and blue combining to create white. 2. Key terms are defined, such as hue, brilliance, saturation, primary colors, secondary colors, tertiary colors, analogous colors, and complementary colors. 3. The color wheel is presented as a way to visualize color relationships, and it is noted that combinations of opposite or analogous colors create harmony.