Abstract. Web archive 2008

Color on the Web

Color by Number

When you write valid XHTML colors you have to use a code called a hexadecimal code or hexadecimal triplet. This means:

• triplet
  Each color is defined as the amount of saturation in three color chanels:
  • Red (R)
  • Green (G)
  • Blue (B)

RGB color channels have a saturation ranging from 0 (no saturation) through 255 (fully saturated). So, to define a color using RGB, you indicate how much saturation in each of the color channels, for example:

• Red (255,0,0)
• Green (0,255,0)
• Blue (0,0,255)
• White (255,255,255)
• Black (0,0,0)

• hexadecimal
  Once you have figured out the RGB values of the color you would like to use, you need to convert it to base 16 or hexadecimal.

The easiest way to convert an RGB value to hexadecimal is to use a program.

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