在html中，表示颜色的方法有几种，比如使用颜色名称，如blue表示蓝色；另一种方法是使用RGB，可以用十六进制表示，也可以使用rgb(x,y,z)表示，如rgb(0,0,255)，等同于#0000ff，——rgb中每一数值都表示一种原色，顺序依次是red，green，blue，十六进制中每2个字符表示一种原色，顺序同rgb，但需要在前面加“#”号。
实际上，我的网站就是多多少少也使用了这些颜色，像语法高亮中的代码，就使用不同的颜色以区别不同的字符串。比如
1 | {KEYWORD}|{TYPE} {printf("<span style="color:#0000ff">%s</span>", yytext);} |
意思是将C语言中的关键字用蓝色表示。
下面就是216种Web安全颜色：
| #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 |
下面是微软IE4.0以上都支持的颜色名称：
| 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
(#8FBC8B) |
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) |
lightgreen
(#90EE90) |
| lightgrey
(#D3D3D3) |
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) |
| 颜色名 | 十六进制颜色值 | 颜色 |
|---|---|---|
| AliceBlue | #F0F8FF | rgb(240, 248, 255) |
| AntiqueWhite | #FAEBD7 | rgb(250, 235, 215) |
| Aqua | #00FFFF | rgb(0, 255, 255) |
| Aquamarine | #7FFFD4 | rgb(127, 255, 212) |
| Azure | #F0FFFF | rgb(240, 255, 255) |
| Beige | #F5F5DC | rgb(245, 245, 220) |
| Bisque | #FFE4C4 | rgb(255, 228, 196) |
| Black | #000000 | rgb(0, 0, 0) |
| BlanchedAlmond | #FFEBCD | rgb(255, 235, 205) |
| Blue | #0000FF | rgb(0, 0, 255) |
| BlueViolet | #8A2BE2 | rgb(138, 43, 226) |
| Brown | #A52A2A | rgb(165, 42, 42) |
| BurlyWood | #DEB887 | rgb(222, 184, 135) |
| CadetBlue | #5F9EA0 | rgb(95, 158, 160) |
| Chartreuse | #7FFF00 | rgb(127, 255, 0) |
| Chocolate | #D2691E | rgb(210, 105, 30) |
| Coral | #FF7F50 | rgb(255, 127, 80) |
| CornflowerBlue | #6495ED | rgb(100, 149, 237) |
| Cornsilk | #FFF8DC | rgb(255, 248, 220) |
| Crimson | #DC143C | rgb(220, 20, 60) |
| Cyan | #00FFFF | rgb(0, 255, 255) |
| DarkBlue | #00008B | rgb(0, 0, 139) |
| DarkCyan | #008B8B | rgb(0, 139, 139) |
| DarkGoldenRod | #B8860B | rgb(184, 134, 11) |
| DarkGray | #A9A9A9 | rgb(169, 169, 169) |
| DarkGreen | #006400 | rgb(0, 100, 0) |
| DarkKhaki | #BDB76B | rgb(189, 183, 107) |
| DarkMagenta | #8B008B | rgb(139, 0, 139) |
| DarkOliveGreen | #556B2F | rgb(85, 107, 47) |
| Darkorange | #FF8C00 | rgb(255, 140, 0) |
| DarkOrchid | #9932CC | rgb(153, 50, 204) |
| DarkRed | #8B0000 | rgb(139, 0, 0) |
| DarkSalmon | #E9967A | rgb(233, 150, 122) |
| DarkSeaGreen | #8FBC8F | rgb(143, 188, 143) |
| DarkSlateBlue | #483D8B | rgb(72, 61, 139) |
| DarkSlateGray | #2F4F4F | rgb(47, 79, 79) |
| DarkTurquoise | #00CED1 | rgb(0, 206, 209) |
| DarkViolet | #9400D3 | rgb(148, 0, 211) |
| DeepPink | #FF1493 | rgb(255, 20, 147) |
| DeepSkyBlue | #00BFFF | rgb(0, 191, 255) |
| DimGray | #696969 | rgb(105, 105, 105) |
| DodgerBlue | #1E90FF | rgb(30, 144, 255) |
| Feldspar | #D19275 | rgb(209, 146, 117) |
| FireBrick | #B22222 | rgb(178, 34, 34) |
| FloralWhite | #FFFAF0 | rgb(255, 250, 240) |
| ForestGreen | #228B22 | rgb(34, 139, 34) |
| Fuchsia | #FF00FF | rgb(255, 0, 255) |
| Gainsboro | #DCDCDC | rgb(220, 220, 220) |
| GhostWhite | #F8F8FF | rgb(248, 248, 255) |
| Gold | #FFD700 | rgb(255, 215, 0) |
| GoldenRod | #DAA520 | rgb(218, 165, 32) |
| Gray | #808080 | rgb(128, 128, 128) |
| Green | #008000 | rgb(0, 128, 0) |
| GreenYellow | #ADFF2F | rgb(173, 255, 47) |
| HoneyDew | #F0FFF0 | rgb(240, 255, 240) |
| HotPink | #FF69B4 | rgb(255, 105, 180) |
| IndianRed | #CD5C5C | rgb(205, 92, 92) |
| Indigo | #4B0082 | rgb(75, 0, 130) |
| Ivory | #FFFFF0 | rgb(255, 255, 240) |
| Khaki | #F0E68C | rgb(240, 230, 140) |
| Lavender | #E6E6FA | rgb(230, 230, 250) |
| LavenderBlush | #FFF0F5 | rgb(255, 240, 245) |
| LawnGreen | #7CFC00 | rgb(124, 252, 0) |
| LemonChiffon | #FFFACD | rgb(255, 250, 205) |
| LightBlue | #ADD8E6 | rgb(173, 216, 230) |
| LightCoral | #F08080 | rgb(240, 128, 128) |
| LightCyan | #E0FFFF | rgb(224, 255, 255) |
| LightGoldenRodYellow | #FAFAD2 | rgb(250, 250, 210) |
| LightGrey | #D3D3D3 | rgb(211, 211, 211) |
| LightGreen | #90EE90 | rgb(144, 238, 144) |
| LightPink | #FFB6C1 | rgb(255, 182, 193) |
| LightSalmon | #FFA07A | rgb(255, 160, 122) |
| LightSeaGreen | #20B2AA | rgb(32, 178, 170) |
| LightSkyBlue | #87CEFA | rgb(135, 206, 250) |
| LightSlateBlue | #8470FF | rgb(132, 112, 255) |
| LightSlateGray | #778899 | rgb(119, 136, 153) |
| LightSteelBlue | #B0C4DE | rgb(176, 196, 222) |
| LightYellow | #FFFFE0 | rgb(255, 255, 224) |
| Lime | #00FF00 | rgb(0, 255, 0) |
| LimeGreen | #32CD32 | rgb(50, 205, 50) |
| Linen | #FAF0E6 | rgb(250, 240, 230) |
| Magenta | #FF00FF | rgb(255, 0, 255) |
| Maroon | #800000 | rgb(128, 0, 0) |
| MediumAquaMarine | #66CDAA | rgb(102, 205, 170) |
| MediumBlue | #0000CD | rgb(0, 0, 205) |
| MediumOrchid | #BA55D3 | rgb(186, 85, 211) |
| MediumPurple | #9370D8 | rgb(147, 112, 216) |
| MediumSeaGreen | #3CB371 | rgb(60, 179, 113) |
| MediumSlateBlue | #7B68EE | rgb(123, 104, 238) |
| MediumSpringGreen | #00FA9A | rgb(0, 250, 154) |
| MediumTurquoise | #48D1CC | rgb(72, 209, 204) |
| MediumVioletRed | #C71585 | rgb(199, 21, 133) |
| MidnightBlue | #191970 | rgb(25, 25, 112) |
| MintCream | #F5FFFA | rgb(245, 255, 250) |
| MistyRose | #FFE4E1 | rgb(255, 228, 225) |
| Moccasin | #FFE4B5 | rgb(255, 228, 181) |
| NavajoWhite | #FFDEAD | rgb(255, 222, 173) |
| Navy | #000080 | rgb(0, 0, 128) |
| OldLace | #FDF5E6 | rgb(253, 245, 230) |
| Olive | #808000 | rgb(128, 128, 0) |
| OliveDrab | #6B8E23 | rgb(107, 142, 35) |
| Orange | #FFA500 | rgb(255, 165, 0) |
| OrangeRed | #FF4500 | rgb(255, 69, 0) |
| Orchid | #DA70D6 | rgb(218, 112, 214) |
| PaleGoldenRod | #EEE8AA | rgb(238, 232, 170) |
| PaleGreen | #98FB98 | rgb(152, 251, 152) |
| PaleTurquoise | #AFEEEE | rgb(175, 238, 238) |
| PaleVioletRed | #D87093 | rgb(216, 112, 147) |
| PapayaWhip | #FFEFD5 | rgb(255, 239, 213) |
| PeachPuff | #FFDAB9 | rgb(255, 218, 185) |
| Peru | #CD853F | rgb(205, 133, 63) |
| Pink | #FFC0CB | rgb(255, 192, 203) |
| Plum | #DDA0DD | rgb(221, 160, 221) |
| PowderBlue | #B0E0E6 | rgb(176, 224, 230) |
| Purple | #800080 | rgb(128, 0, 128) |
| Red | #FF0000 | rgb(255, 0, 0) |
| RosyBrown | #BC8F8F | rgb(188, 143, 143) |
| RoyalBlue | #4169E1 | rgb(65, 105, 225) |
| SaddleBrown | #8B4513 | rgb(139, 69, 19) |
| Salmon | #FA8072 | rgb(250, 128, 114) |
| SandyBrown | #F4A460 | rgb(244, 164, 96) |
| SeaGreen | #2E8B57 | rgb(46, 139, 87) |
| SeaShell | #FFF5EE | rgb(255, 245, 238) |
| Sienna | #A0522D | rgb(160, 82, 45) |
| Silver | #C0C0C0 | rgb(192, 192, 192) |
| SkyBlue | #87CEEB | rgb(135, 206, 235) |
| SlateBlue | #6A5ACD | rgb(106, 90, 205) |
| SlateGray | #708090 | rgb(112, 128, 144) |
| Snow | #FFFAFA | rgb(255, 250, 250) |
| SpringGreen | #00FF7F | rgb(0, 255, 127) |
| SteelBlue | #4682B4 | rgb(70, 130, 180) |
| Tan | #D2B48C | rgb(210, 180, 140) |
| Teal | #008080 | rgb(0, 128, 128) |
| Thistle | #D8BFD8 | rgb(216, 191, 216) |
| Tomato | #FF6347 | rgb(255, 99, 71) |
| Turquoise | #40E0D0 | rgb(64, 224, 208) |
| Violet | #EE82EE | rgb(238, 130, 238) |
| VioletRed | #D02090 | rgb(208, 32, 144) |
| Wheat | #F5DEB3 | rgb(245, 222, 179) |
| White | #FFFFFF | rgb(255, 255, 255) |
| WhiteSmoke | #F5F5F5 | rgb(245, 245, 245) |
| Yellow | #FFFF00 | rgb(255, 255, 0) |
| YellowGreen | #9ACD32 | rgb(154, 205, 50) |
本文参考下面的文章：
http://www.admin5.com/html/html_tutorials/050_html_color_ref.html (2019.4.8 注：已无法访问)
https://blog.csdn.net/liuhw4598/article/details/78279737
