Color theory is the study of how colors interact with each other and how they can be combined to create visually appealing and harmonious designs. It encompasses principles such as color harmony, color psychology, and color symbolism. Understanding color theory allows designers to effectively communicate messages, evoke emotions, and create desired effects in their work. Key concepts in color theory include the color wheel, color schemes (such as complementary, analogous, and triadic), as well as factors like hue, saturation, and brightness. By applying color theory principles, designers can create impactful and cohesive designs that resonate with their audience.