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)