Color in hexadecimal

Quick answer：

In the context of computing and graphics, 'color in hexadecimal' refers to the representation of a color using a hexadecimal number system. Hexadecimal color codes are typically six digits long, prefixed with a '#' symbol. Each pair of digits represents the intensity of red, green, and blue colors, respectively. For example, '#FFFFFF' represents white, and '#000000' represents black.