Tag Attribute : Colours

HTML colours described in hex RGB (Red Green Blue) components

#RRGGBB    ....   256x256x256 = 16 Millions colours ?

#ffff00 : yellow

table of "web safe" colours (216 = 6x6x6 colour cube : 00 33 66 99 CC FF)

Colour Blindness

When using colour, remember that 5 to 10% of men have some form of colour blindness. This can cause difficulties distinguishing between red and green, or between yellow and blue.

To know more about that subject : http://www.lynda.com/hex.html

and http://www.permadi.com/tutorial/websafecolor/