RGB
There are usually different ways of writing these lists, for example when creating websites.  The most common way uses hexadecimal code, in which the numbers ranging from 0 to 255 can be represented using 2 digits.  This only needs six hexadecimal digits (which may be the numbers 0-9 or the letters A-F) to represent RGB colors. When using hexadecimal code, these digits are preceded with a '#' character.  See the Examples section below.