Color models are systems used to represent and describe colors in a standardized way. They help in various fields like digital imaging, printing, and design by providing a framework for mixing and reproducing colors. Common color models include RGB, which uses red, green, and blue light, and CMYK, which combines cyan, magenta, yellow, and black inks. Each color model has its own method of defining colors. For instance, the HSV model represents colors in terms of hue, saturation, and value, making it easier for artists to select colors based on their visual characteristics. Understanding these models is essential for accurate color communication.