A color system is a set of guidelines that define the colors used in a brand's visual identity. It establishes a consistent and cohesive color palette that represents the brand's personality, values, and purpose. A well-designed color system includes a range of colors with specific values, such as RGB, CMYK, or HEX codes, and provides guidance on how to use them in different contexts, such as print, digital, or environmental. The color system may also include rules for color combinations, such as primary and secondary colors, complementary or analogous hues, or gradients and patterns.