We already saw that when a computer stores colour values in 24-bits, it splits up the information in a special way - the first byte for red values, the second for green and the third for blue.
In theory you could have any value in the range of 0-255 in each byte, giving a total of 16,777,516 possible combinations. In practice, however, browsers such as IE and Netscape are designed to store and display colours using 8-bit storage - i.e. a possible maximum of 256. They do this by limiting the number of hexadecimal digits that are used - 0, 3, 6, 9, C and F. If you try to program in any other combination, the browser will default to the colour it finds that comes the closest!
The full palette of 256 browser colours is shown below....
|
000000 |
000033 |
000066 |
000099 |
0000CC |
0000FF |
003300 |
003333 |
003366 |
003399 |
0033CC |
0033FF |
|
006600 |
006633 |
006666 |
006699 |
0066CC |
0066FF |
009900 |
009933 |
009966 |
009999 |
0099CC |
0099FF |
|
00CC00 |
00CC33 |
00CC66 |
00CC99 |
00CCCC |
00CCFF |
00FF00 |
00FF33 |
00FF66 |
00FF99 |
00FFCC |
00FFFF |
|
330000 |
330033 |
330066 |
330099 |
3300CC |
3300FF |
333300 |
333333 |
333366 |
333399 |
3333CC |
3333FF |
|
336600 |
336633 |
336666 |
336699 |
3366CC |
3366FF |
339900 |
339933 |
339966 |
339999 |
3399CC |
3399FF |
|
33CC00 |
33CC33 |
33CC66 |
33CC99 |
33CCCC |
33CCFF |
33FF00 |
33FF33 |
33FF66 |
33FF99 |
33FFCC |
33FFFF |
|
660000 |
660033 |
660066 |
660099 |
6600CC |
6600FF |
663300 |
663333 |
663366 |
663399 |
6633CC |
6633FF |
|
666600 |
666633 |
666666 |
666699 |
6666CC |
6666FF |
669900 |
669933 |
669966 |
669999 |
6699CC |
6699FF |
|
66CC00 |
66CC33 |
66CC66 |
66CC99 |
66CCCC |
66CCFF |
66FF00 |
66FF33 |
66FF66 |
66FF99 |
66FFCC |
66FFFF |
|
990000 |
990033 |
990066 |
990099 |
9900CC |
9900FF |
993300 |
993333 |
993366 |
993399 |
9933CC |
9933FF |
|
996600 |
996633 |
996666 |
996699 |
9966CC |
9966FF |
999900 |
999933 |
999966 |
999999 |
9999CC |
9999FF |
|
99CC00 |
99CC33 |
99CC66 |
99CC99 |
99CCCC |
99CCFF |
99FF00 |
99FF33 |
99FF66 |
99FF99 |
99FFCC |
99FFFF |
|
CC0000 |
CC0033 |
CC0066 |
CC0099 |
CC00CC |
CC00FF |
CC3300 |
CC3333 |
CC3366 |
CC3399 |
CC33CC |
CC33FF |
|
CC6600 |
CC6633 |
CC6666 |
CC6699 |
CC66CC |
CC66FF |
CC9900 |
CC9933 |
CC9966 |
CC9999 |
CC99CC |
CC99FF |
|
CCCC00 |
CCCC33 |
CCCC66 |
CCCC99 |
CCCCCC |
CCCCFF |
CCFF00 |
CCFF33 |
CCFF66 |
CCFF99 |
CCFFCC |
CCFFFF |
|
FF0000 |
FF0033 |
FF0066 |
FF0099 |
FF00CC |
FF00FF |
FF3300 |
FF3333 |
FF3366 |
FF3399 |
FF33CC |
FF33FF |
|
FF6600 |
FF6633 |
FF6666 |
FF6699 |
FF66CC |
FF66FF |
FF9900 |
FF9933 |
FF9966 |
FF9999 |
FF99CC |
FF99FF |
|
FFCC00 |
FFCC33 |
FFCC66 |
FFCC99 |
FFCCCC |
FFCCFF |
FFFF00 |
FFFF33 |
FFFF66 |
FFFF99 |
FFFFCC |
FFFFFF |
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Comments? c.nyssen@abcol.ac.uk |
Best viewed at 800x600 in 16-bit high color with Trebuchet MS installed. If you do not have this font, click here |