Red - Green - Blue
Cyan, yellow, magenta, key (black)
Hue, saturation, value
Hue, saturation, lightness
The #1A0099 RGB color code (Indigo (web)) is composed of a hexadecimal 1A red (26/256), a 00 green (0/256) and a 99 blue component (153/256). The decimal RGB color code is rgb(26,0,153).