A selection of web-safe colours with their hexadecimal equivalents
FFFFFF FFFFCC FFFF99 FFFF66 FFFF33 FFFF00 FFCCFF FFCCCC FFCC99 FFCC66 FFCC33 FFCC00 FF99FF FF99CC FF9999 FF9966 FF9933 FF9900
FF66FF FF66CC FF6699 FF6666 FF6633 FF6600 FF33FF FF33CC FF3399 FF3366 FF3333 FF3300 FF00FF FF00CC FF0099 FF0066 FF0033 FF0000
CCFFFF CCFFCC CCFF99 CCFF66 CCFF33 CCFF00 CCCCFF CCCCCC CCCC99 CCCC66 CCCC33 CCCC00 CC99FF CC99CC CC9999 CC9966 CC9933 CC9900
CC66FF CC66CC CC6699 CC6666 CC6633 CC6600 CC33FF CC33CC CC3399 CC3366 CC3333 CC3300 CC00FF CC00CC CC0099 CC0066 CC0033 CC0000
99FFFF 99FFCC 99FF99 99FF66 99FF33 99FF00 99CCFF 99CCCC 99CC99 99CC66 99CC33 99CC00 9999FF 9999CC 999999 999966 999933 999900
9966FF 9966CC 996699 996666 996633 996600 9933FF 9933CC 993399 993366 993333 993300 9900FF 9900CC 990099 990066 990033 990000
66FFFF 66FFCC 66FF99 66FF66 66FF33 66FF00 66CCFF 66CCCC 66CC99 66CC66 66CC33 66CC00 6699FF 6699CC 669999 669966 669933 669900
6666FF 6666CC 666699 666666 666633 666600 6633FF 6633CC 663399 663366 663333 663300 6600FF 6600CC 660099 660066 660033 660000
33FFFF 33FFCC 33FF99 33FF66 33FF33 33FF00 33CCFF 33CCCC 33CC99 33CC66 33CC33 33CC00 3399FF 3399CC 339999 339966 339933 339900
3366FF 3366CC 336699 336666 336633 336600 3333FF 3333CC 333399 333366 333333 333300 3300FF 3300CC 330099 330066 330033 330000
00FFFF 00FFCC 00FF99 00FF66 00FF33 00FF00 00CCFF 00CCCC 00CC99 00CC66 00CC33 00CC00 0099FF 0099CC 009999 009966 009933 009900
0066FF 0066CC 006699 006666 006633 006600 0033FF 0033CC 003399 003366 003333 003300 0000FF 0000CC 000099 000066 000033 000000

The numbers are shown in hexadecimal format in the form of rrggbb.
rr = red 00 to FF (for a decimal value of 0 to 255).
gg = green 00 to FF (for a decimal value of 0 to 255).
bb = blue 00 to FF (for a decimal value of 0 to 255).

Key: (Hexadecimal in the left column and decimal in the right column)
00 = 0
33 = 51
66 = 102
99 = 153
CC = 204
FF = 255

e.g. red = 51, green = 255, blue = 153, hexadecimal equivalent for HTML #33FF99.

A selection of the above web-safe colours that can be matched when printed with CMYK inks.