| Hexadecimal | |
| A number system often used in web page design to define RGB colours. It is a base-16 system and contains the following symbols: 0 to 9, followed by the letters A to F. Thus, the decimal number 10 equals the hexadecimal number A. An HTML colour is defined by the syntax <... color=“#RRGGBB“> with RR representing the amount of red, GG the amount of green and BB the amount of blue making up the desired RGB colour. |