Hexadecimal Color Guide for Web Design / W.Zicker / SETLinc.com

#RRGGBB = format

RR = red value
GG = green value
BB = blue value

(values can be from 00 through FF)

Use pairs only of the following hexadecimal (base 16, or 0 through F) numbers to define non-dithering "web safe" colors:
(from lowest to highest)

0 3 6 9 C F

#000000 = black
#FFFFFF = white
#FF0000 = red
#00FF00 = green
#0000FF = blue

hexadecimal = base 16:

0 1 2 3 4 5 6 7 8 9  A  B  C  D  E  F

decimal = base 10:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16