The 216 Color, Browser-Safe Palette Colors are represented on the computer screen by the amount of red, green and blue displayed. The colors are created by mixing light; If all three are set to zero, black results. When red, green and blue are set to 100%, the resulting color is white.

The color codes use a six-digit hexadecimal notation, such as "000000" for black or "FFFFFF" for white. The first two digits in the hexadecimal notation represent the amount of red, the second two digits represent the amount of green, and the third set of two digits represents the amount of blue in the color.

The possible hexadecimal values for red, green or blue in a color can be 00, 33, 66, 99, CC, or FF. Three colors and six possible values for each results in a total of 216 colors.  Other color combinations are possible (nearly 16.8 million combinations to be more precise), but these 216 colors appear the same on a variety of computer platforms.

The first small chart below demonstrates that equal amounts of each color create various shades of gray. The following three charts display the 216 browser-safe colors in three different arrangements.  The first set of color charts explores red by setting the Red in RGB to FF, 100%, and creating 36 combinations.  Then decrementing it to CC, 99, 66,33, and 00 respectively. The second set of charts explores green and finally the third set of charts explores blue.

Shades of Gray

000000

333333

666666

999999

CCCCCC

FFFFFF

RGB values
Starting with red at FF, 100%

Red at FF

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

Red at CC

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

Red at 99

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

Red at 66

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

Red at 33

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

Red at 00

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

Green at CC

00CC00	00CC33	00CC66	00CC99	00CCCC	00CCFF
33CC00	33CC33	33CC66	33CC99	33CCCC	33CCFF
66CC00	66CC33	66CC66	66CC99	66CCCC	66CCFF
99CC00	99CC33	99CC66	99CC99	99CCCC	99CCFF
CCCC00	CCCC33	CCCC66	CCCC99	CCCCCC	CCCCFF
FFCC00	FFCC33	FFCC66	FFCC99	FFCCCC	FFCCFF

Green at 99

009900	009933	009966	009999	0099CC	0099FF
339900	339933	339966	339999	3399CC	3399FF
669900	669933	669966	669999	6699CC	6699FF
999900	999933	999966	999999	9999CC	9999FF
CC9900	CC9933	CC9966	CC9999	CC99CC	CC99FF
FF9900	FF9933	FF9966	FF9999	FF99CC	FF99FF

Green at 66

006600	006633	006666	006699	0066CC	0066FF
336600	336633	336666	336699	3366CC	3366FF
666600	666633	666666	666699	6666CC	6666FF
996600	996633	996666	996699	9966CC	9966FF
CC6600	CC6633	CC6666	CC6699	CC66CC	CC66FF
FF6600	FF6633	FF6666	FF6699	FF66CC	FF66FF

Green at 33

003300	003333	003366	003399	0033CC	0033FF
333300	333333	333366	333399	3333CC	3333FF
663300	663333	663366	663399	6633CC	6633FF
993300	993333	993366	993399	9933CC	9933FF
CC3300	CC3333	CC3366	CC3399	CC33CC	CC33FF
FF3300	FF3333	FF3366	FF3399	FF33CC	FF33FF

Green at 00

000000	000033	000066	000099	0000CC	0000FF
330000	330033	330066	330099	3300CC	3300FF
660000	660033	660066	660099	6600CC	6600FF
990000	990033	990066	990099	9900CC	9900FF
CC0000	CC0033	CC0066	CC0099	CC00CC	CC00FF
FF0000	FF0033	FF0066	FF0099	FF00CC	FF00FF

Blue at CC

0000CC	0033CC	0066CC	0099CC	00CCCC	00FFCC
3300CC	3333CC	3366CC	3399CC	33CCCC	33FFCC
6600CC	6633CC	6666CC	6699CC	66CCCC	66FFCC
9900CC	9933CC	9966CC	9999CC	99CCCC	99FFCC
CC00CC	CC33CC	CC66CC	CC99CC	CCCCCC	CCFFCC
FF00CC	FF33CC	FF66CC	FF99CC	FFCCCC	FFFFCC

Blue at 99

000099	003399	006699	009999	00CC99	00FF99
330099	333399	336699	339999	33CC99	33FF99
660099	663399	666699	669999	66CC99	66FF99
990099	993399	996699	999999	99CC99	99FF99
CC0099	CC3399	CC6699	CC9999	CCCC99	CCFF99
FF0099	FF3399	FF6699	FF9999	FFCC99	FFFF99

Blue at 66

000066	003366	006666	009966	00CC66	00FF66
330066	333366	336666	339966	33CC66	33FF66
660066	663366	666666	669966	66CC66	66FF66
990066	993366	996666	999966	99CC66	99FF66
CC0066	CC3366	CC6666	CC9966	CCCC66	CCFF66
FF0066	FF3366	FF6666	FF9966	FFCC66	FFFF66

Blue at 33

000033	003333	006633	009933	00CC33	00FF33
330033	333333	336633	339933	33CC33	33FF33
660033	663333	666633	669933	66CC33	66FF33
990033	993333	996633	999933	99CC33	99FF33
CC0033	CC3333	CC6633	CC9933	CCCC33	CCFF33
FF0033	FF3333	FF6633	FF9933	FFCC33	FFFF33

Blue at 00

000000	003300	006600	009900	00CC00	00FF00
330000	333300	336600	339900	33CC00	33FF00
660000	663300	666600	669900	66CC00	66FF00
990000	993300	996600	999900	99CC00	99FF00
CC0000	CC3300	CC6600	CC9900	CCCC00	CCFF00
FF0000	FF3300	FF6600	FF9900	FFCC00	FFFF00