Color system colors

Quick answer：

The term 'color system colors' refers to a set of predefined colors used in various contexts, such as design, art, and technology. These colors are often standardized and can be found in color models like RGB (Red, Green, Blue), CMYK (Cyan, Magenta, Yellow, Key/Black), and HSL (Hue, Saturation, Lightness). The 'four-color system' is a specific type of color model that uses four ink colors to reproduce a wide range of colors.