Additive Color -- The Color System of Light

The combination of all three makes white.
The absence of all three leaves black.

• The RGB color system is a 24-bit system.
• The system uses 8 bits for each of three color channels.
• A color in RGB notation has a set of two hexidecimal numbers to represent each of the three channels.
  • RRGGBB
• Hexidecimal numbers are base-16.
  • Base10 10= A in Base16
  • Base10 11=B in Base16
  • Base10 12=C in Base16
  • Base10 13=D in Base16
  • Base10 14=E in Base16
  • Base10 15=F in Base16
• 8 bits (two hexidecimal numbers, e.g. 00 or 6A ) can represent 256 values, 0-255.
• Three sets of 256 can represent 16,777,216 colors.

However, there are far more monitors that are 8-bit (only 256 colors) than 24-bit.

In addition, we have to take into account the color palette supported by Web browsers...
We need to use the Web-Safe color palette.