Color RGB values refer to the representation of a color in the RGB color model, which is an additive color model in which red, green, and blue light are added together in various ways to reproduce a broad array of colors. Each color is represented by a combination of three values (0-255) for red, green, and blue. For example, the color white is represented as (255, 255, 255) and black as (0, 0, 0).