Designers were once encouraged to stick to these 216 web-safe colors in their websites
because before 2011 a lot of 8-bit color displays had to "dither" any of the other colors.



The basic color keywords are: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow.
With the extended set of colors, the following 140 are called browser-safe because all are recognized by name as well as hex number.

NAME

COLOR

HEX

AliceBlue
  #F0F8FF
AntiqueWhite
  #FAEBD7
AQUA
  #00FFFF
Aquamarine
  #7FFFD4
Azure
  #F0FFFF
Beige
  #F5F5DC
Bisque
  #FFE4C4
BLACK
  #000000
BlanchedAlmond
  #FFEBCD
BLUE
  #0000FF
BlueViolet
  #8A2BE2
Brown
  #A52A2A
BurlyWood
  #DEB887
CadetBlue
  #5F9EA0
Chartreuse
  #7FFF00
Chocolate
  #D2691E
Coral
  #FF7F50
CornflowerBlue
  #6495ED
Cornsilk
  #FFF8DC
Crimson
  #DC143C
Cyan
  #00FFFF
DarkBlue
  #00008B
DarkCyan
  #008B8B
DarkGoldenRod
  #B8860B
DarkGray
  #A9A9A9
DarkGreen
  #006400
DarkKhaki
  #BDB76B
DarkMagenta
  #8B008B
DarkOliveGreen
  #556B2F
DarkOrange
  #FF8C00
DarkOrchid
  #9932CC
DarkRed
  #8B0000
DarkSalmon
  #E9967A
DarkSeaGreen
  #8FBC8F
DarkSlateBlue
  #483D8B
DarkSlateGray
  #2F4F4F
DarkTurquoise
  #00CED1
DarkViolet
  #9400D3
DeepPink
  #FF1493
DeepSkyBlue
  #00BFFF
DimGray
  #696969
DodgerBlue
  #1E90FF
FireBrick
  #B22222
FloralWhite
  #FFFAF0
ForestGreen
  #228B22
FUCHSIA
  #FF00FF
Gainsboro
  #DCDCDC
GhostWhite
  #F8F8FF
Gold
  #FFD700
GoldenRod
  #DAA520
GRAY
  #808080
GREEN
  #008000
GreenYellow
  #ADFF2F
HoneyDew
  #F0FFF0
HotPink
  #FF69B4
IndianRed
  #CD5C5C
Indigo
  #4B0082
Ivory
  #FFFFF0
Khaki
  #F0E68C
Lavender
  #E6E6FA
LavenderBlush
  #FFF0F5
LawnGreen
  #7CFC00
LemonChiffon
  #FFFACD
LightBlue
  #ADD8E6
LightCoral
  #F08080
LightCyan
  #E0FFFF
LightGoldenRodYellow
  #FAFAD2
LightGray
  #D3D3D3
LightGreen
  #90EE90
LightPink
  #FFB6C1
LightSalmon
  #FFA07A
LightSeaGreen
  #20B2AA
LightSkyBlue
  #87CEFA
LightSlateGray
  #778899
LightSteelBlue
  #B0C4DE
LightYellow
  #FFFFE0
LIME
  #00FF00
LimeGreen
  #32CD32
Linen
  #FAF0E6
Magenta
  #FF00FF
MAROON
  #800000
MediumAquaMarine
  #66CDAA
MediumBlue
  #0000CD
MediumOrchid
  #BA55D3
MediumPurple
  #9370DB
MediumSeaGreen
  #3CB371
MediumSlateBlue
  #7B68EE
MediumSpringGreen
  #00FA9A
MediumTurquoise
  #48D1CC
MediumVioletRed
  #C71585
MidnightBlue
  #191970
MintCream
  #F5FFFA
MistyRose
  #FFE4E1
Moccasin
  #FFE4B5
NavajoWhite
  #FFDEAD
NAVY
  #000080
OldLace
  #FDF5E6
OLIVE
  #808000
OliveDrab
  #6B8E23
ORANGE
  #FFA500
OrangeRed
  #FF4500
Orchid
  #DA70D6
PaleGoldenRod
  #EEE8AA
PaleGreen
  #98FB98
PaleTurquoise
  #AFEEEE
PaleVioletRed
  #DB7093
PapayaWhip
  #FFEFD5
PeachPuff
  #FFDAB9
Peru
  #CD853F
Pink
  #FFC0CB
Plum
  #DDA0DD
PowderBlue
  #B0E0E6
PURPLE
  #800080
RED
  #FF0000
RosyBrown
  #BC8F8F
RoyalBlue
  #4169E1
SaddleBrown
  #8B4513
Salmon
  #FA8072
SandyBrown
  #F4A460
SeaGreen
  #2E8B57
SeaShell
  #FFF5EE
Sienna
  #A0522D
SILVER
  #C0C0C0
SkyBlue
  #87CEEB
SlateBlue
  #6A5ACD
SlateGray
  #708090
Snow
  #FFFAFA
SpringGreen
  #00FF7F
SteelBlue
  #4682B4
Tan
  #D2B48C
TEAL
  #008080
thistle
  #D8BFD8
Tomato
  #FF6347
Turquoise
  #40E0D0
Violet
  #EE82EE
Wheat
  #F5DEB3
WHITE
  #FFFFFF
WhiteSmoke
  #F5F5F5
YELLOW
  #FFFF00
YellowGreen
  #9ACD32

HEX

COLOR

NAME

#000000
 BLACK
#00BFFF
 DeepSkyBlue
#0000CD
 MediumBlue
#00CED1
 DarkTurquoise
#00FA9A
 MediumSpringGreen
#0000FF
 BLUE
#00FF00
 LIME
#00FF7F
 SpringGreen
#00FFFF
 AQUA
#00FFFF
 Cyan
#1E90FF
 DodgerBlue
#2E8B57
 SeaGreen
#2F4F4F
 DarkSlateGray
#3CB371
 MediumSeaGreen
#4B0082
 Indigo
#5F9EA0
 CadetBlue
#6A5ACD
 SlateBlue
#6B8E23
 OliveDrab
#7B68EE
 MediumSlateBlue
#7CFC00
 LawnGreen
#7FFF00
 Chartreuse
#7FFFD4
 Aquamarine
#8A2BE2
 BlueViolet
#00008B
 DarkBlue
#8B0000
 DarkRed
#008B8B
 DarkCyan
#8B008B
 DarkMagenta
#8B4513
 SaddleBrown
#8FBC8F
 DarkSeaGreen
#9ACD32
 YellowGreen
#20B2AA
 LightSeaGreen
#32CD32
 LimeGreen
#40E0D0
 Turquoise
#48D1CC
 MediumTurquoise
#66CDAA
 MediumAquaMarine
#000080
 NAVY
#87CEEB
 SkyBlue
#87CEFA
 LightSkyBlue
#90EE90
 LightGreen
#98FB98
 PaleGreen
#228B22
 ForestGreen
#483D8B
 DarkSlateBlue
#556B2F
 DarkOliveGreen
#4169E1
 RoyalBlue
#4682B4
 SteelBlue
#006400
 DarkGreen
#6495ED
 CornflowerBlue
#008000
 GREEN
#008080
 TEAL
#9370DB
 MediumPurple
#9400D3
 DarkViolet
#9932CC
 DarkOrchid
#191970
 MidnightBlue
#696969
 DimGray
#708090
 SlateGray
#778899
 LightSlateGray
#800000
 MAROON
#800080
 PURPLE
#808000
 OLIVE
#808080
 GRAY
#A9A9A9
 DarkGray
#A52A2A
 Brown
#A0522D
 Sienna
#ADD8E6
 LightBlue
#ADFF2F
 GreenYellow
#AFEEEE
 PaleTurquoise
#B0C4DE
 LightSteelBlue
#B0E0E6
 PowderBlue
#B8860B
 DarkGoldenRod
#B22222
 FireBrick
#BA55D3
 MediumOrchid
#BC8F8F
 RosyBrown
#BDB76B
 DarkKhaki
#C0C0C0
 SILVER
#C71585
 MediumVioletRed
#CD5C5C
 IndianRed
#CD853F
 Peru
#D2B48C
 Tan
#D3D3D3
 LightGray
#D8BFD8
 thistle
#D2691E
 Chocolate
#DA70D6
 Orchid
#DAA520
 GoldenRod
#DB7093
 PaleVioletRed
#DC143C
 Crimson
#DCDCDC
 Gainsboro
#DDA0DD
 Plum
#DEB887
 BurlyWood
#E0FFFF
 LightCyan
#E6E6FA
 Lavender
#E9967A
 DarkSalmon
#EE82EE
 Violet
#EEE8AA
 PaleGoldenRod
#F0E68C
 Khaki
#F0F8FF
 AliceBlue
#F0FFF0
 HoneyDew
#F0FFFF
 Azure
#F4A460
 SandyBrown
#F5DEB3
 Wheat
#F5F5DC
 Beige
#F5F5F5
 WhiteSmoke
#F5FFFA
 MintCream
#F8F8FF
 GhostWhite
#F08080
 LightCoral
#FA8072
 Salmon
#FAEBD7
 AntiqueWhite
#FAF0E6
 Linen
#FAFAD2
 LightGoldenRodYellow
#FDF5E6
 OldLace
#FF0000
 RED
#FF00FF
 FUCHSIA
#FF00FF
 Magenta
#FF7F50
 Coral
#FF8C00
 DarkOrange
#FF69B4
 HotPink
#FF1493
 DeepPink
#FF4500
 OrangeRed
#FF6347
 Tomato
#FFA07A
 LightSalmon
#FFA500
 ORANGE
#FFB6C1
 LightPink
#FFC0CB
 Pink
#FFD700
 Gold
#FFDAB9
 PeachPuff
#FFDEAD
 NavajoWhite
#FFE4B5
 Moccasin
#FFE4C4
 Bisque
#FFE4E1
 MistyRose
#FFEBCD
 BlanchedAlmond
#FFEFD5
 PapayaWhip
#FFF0F5
 LavenderBlush
#FFF5EE
 SeaShell
#FFF8DC
 Cornsilk
#FFFACD
 LemonChiffon
#FFFAF0
 FloralWhite
#FFFAFA
 Snow
#FFFF00
 YELLOW
#FFFFE0
 LightYellow
#FFFFF0
 Ivory
#FFFFFF
 WHITE

Note that in this RGB color model, fuchsia and magenta are exactly the same color. The real fuchsia is actually a more purplish color; magenta is more reddish. Also, aqua and cyan are identical.