Hexadecimal Colors

Hexadecimal colors are colors used in displaying web pages. Colors may be specified as an RGB ,hexadecimal format. A color tool or other graphics software is often used to generate color values. In some uses, hexadecimal color codes are specified with notation using a number sign # A color is specified according to the intensity of its red, green and blue components, each represented by eight bits.There are 24 bits used to specify a web color

Source: https://en.wikipedia.org/wiki/Web_colors