Web color
There are several ways to choose colors for parts of webpages. Colors may be listed as an RGB triplet (a set of three numbers, red, green, and blue) in hexadecimal format (a hex triplet, rr, gg, bb). An RGB triplet can make 16,777,216 different colors. Standard colors can also be chosen by their common English names. Often a color tool or other graphics software is used to create color values.