International Color

Quick answer：

International Color refers to a standardized system used to classify colors. It is used in various fields such as design, technology, and art. The most well-known system is the RGB (Red, Green, Blue) color model, which is used in digital devices. Other systems include CMYK (Cyan, Magenta, Yellow, Key/Black) for printing, and HSV (Hue, Saturation, Value) for color theory.