引用：http://www.admin5.com/html/html_tutorials/050_html_color_ref.html
在HTML里，颜色有两种表示方式。一种是用颜色名称表示，比如blue表示蓝色。另外一种是用16进制的数值表示RGB的颜色值。RGB是Red，Green，Blue意思，RGB每个原色的最小值是0，最大值是255，如果换算成16进制表示，就是(#00)，(#FF)。比如白色的RGB(255,255,255)，就用#FFFFFF表示；还有黑色的RGB(0,0,0)，就用#000000表示。
注：在W3C制定的HTML 4.0标准中，只有16种颜色可以用颜色名称表示(aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow)，其它的颜色都要用16进制RGB颜色值表示。
当然，现在的浏览器支持更多的颜色名称。不过为保险起见，建议你还是采用16进制RGB颜色值来表示颜色。并且在值前加上#这个符号。
为了方便大家找到合适的颜色，我们在这里列了一些颜色说明，以供大家参考，不妨作为一种速查工具。
Web安全颜色
以前，很多电脑显示器最多支持256色，因此出现了216种Web安全颜色，以保证网页的颜色能够正确显示。
那为什么不是256种Web安全颜色呢？因为Microsoft和Mac操作系统有40种不同的系统保留颜色。
以下就是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 |
微软支持的颜色名称
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) |