仅识别CSS1中的16个基本颜色关键字，使用特定算法转换未识别的值（通常为完全不同的颜色）。其他颜色关键字应仅用于CSS和。与HTML不同，CSS将完全忽略未知关键字。颜色关键字全部代表纯色，纯色，没有透明度。CSS Level 1仅包含16种基本颜色，称为VGA颜色，因为它们是从显卡上的可显示颜色集中获取的。CSS Level 2添加了orange关键字。尽管早期的浏览器支持不符合规范的各种颜色（大多数都是从X11颜色列表中改编而来），但直到SVG 1.0和CSS Colors Level 3才正式定义它们。它们被称为扩展颜色关键字，X11颜色或SVG颜色。CSS Colors Level 4添加了rebeccapurple关键字。
颜色太多不好打字网站为：https://devdocs.io/css/color_value；颜色代码。
em：字体为斜体可以直接在HTML中使用。
pr：规则的prefix描述符指定将被添加到标记表示的内容。如果未指定，则默认值为""（空字符串）。
black | #000000 | |||
silver | #c0c0c0 | |||
gray | #808080 | |||
white | #ffffff | |||
maroon | #800000 | |||
red | #ff0000 | |||
purple | #800080 | |||
fuchsia | #ff00ff | |||
green | #008000 | |||
lime | #00ff00 | |||
olive | #808000 | |||
yellow | #ffff00 | |||
navy | #000080 | |||
blue | #0000ff | |||
teal | #008080 | |||
aqua | #00ffff | |||
orange | #ffa500 | |||
aliceblue | #f0f8ff | |||
antiquewhite | #faebd7 | |||
aquamarine | #7fffd4 | |||
azure | #f0ffff | |||
beige | #f5f5dc | |||
bisque | #ffe4c4 | |||
blanchedalmond | #ffebcd | |||
blueviolet | #8a2be2 | |||
brown | #a52a2a | |||
burlywood | #deb887 | |||
cadetblue | #5f9ea0 | |||
chartreuse | #7fff00 | |||
chocolate | #d2691e | |||
coral | #ff7f50 | |||
cornflowerblue | #6495ed | |||
cornsilk | #fff8dc | |||
crimson | #dc143c | |||
cyan（同义词aqua） | #00ffff | |||
darkblue | #00008b | |||
darkcyan | #008b8b | |||
darkgoldenrod | #b8860b | |||
darkgray | #a9a9a9 | |||
darkgreen | #006400 | |||
darkgrey | #a9a9a9 | |||
darkkhaki | #bdb76b | |||
darkmagenta | #8b008b | |||
darkolivegreen | #556b2f | |||
darkorange | #ff8c00 | |||
darkorchid | #9932cc | |||
darkred | #8b0000 | |||
darksalmon | #e9967a | |||
darkseagreen | #8fbc8f | |||
darkslateblue | #483d8b | |||
darkslategray | #2f4f4f | |||
darkslategrey | #2f4f4f | |||
darkturquoise | #00ced1 | |||
darkviolet | #9400d3 | |||
deeppink | #ff1493 | |||
deepskyblue | #00bfff | |||
dimgray | #696969 | |||
dimgrey | #696969 | |||
dodgerblue | #1e90ff | |||
firebrick | #b22222 | |||
floralwhite | #fffaf0 | |||
forestgreen | #228b22 | |||
gainsboro | #dcdcdc | |||
ghostwhite | #f8f8ff | |||
gold | #ffd700 | |||
goldenrod | #daa520 | |||
greenyellow | #adff2f | |||
grey | #808080 | |||
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 | |||
lightgrey | #d3d3d3 | |||
lightpink | #ffb6c1 | |||
lightsalmon | #ffa07a | |||
lightseagreen | #20b2aa | |||
lightskyblue | #87cefa | |||
lightslategray | #778899 | |||
lightslategrey | #778899 | |||
lightsteelblue | #b0c4de | |||
lightyellow | #ffffe0 | |||
limegreen | #32cd32 | |||
linen | #faf0e6 | |||
magenta（同义词fuchsia） | #ff00ff | |||
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 | |||
oldlace | #fdf5e6 | |||
olivedrab | #6b8e23 | |||
orangered | #ff4500 | |||
orchid | #da70d6 | |||
palegoldenrod | #eee8aa | |||
palegreen | #98fb98 | |||
paleturquoise | #afeeee | |||
palevioletred | #db7093 | |||
papayawhip | #ffefd5 | |||
peachpuff | #ffdab9 | |||
peru | #cd853f | |||
pink | #ffc0cb | |||
plum | #dda0dd | |||
powderblue | #b0e0e6 | |||
rosybrown | #bc8f8f | |||
royalblue | #4169e1 | |||
saddlebrown | #8b4513 | |||
salmon | #fa8072 | |||
sandybrown | #f4a460 | |||
seagreen | #2e8b57 | |||
seashell | #fff5ee | |||
sienna | #a0522d | |||
skyblue | #87ceeb | |||
slateblue | #6a5acd | |||
slategray | #708090 | |||
slategrey | #708090 | |||
snow | #fffafa | |||
springgreen | #00ff7f | |||
steelblue | #4682b4 | |||
tan | #d2b48c | |||
thistle | #d8bfd8 | |||
tomato | #ff6347 | |||
turquoise | #40e0d0 | |||
violet | #ee82ee | |||
wheat | #f5deb3 | |||
whitesmoke | #f5f5f5 | |||
yellowgreen | #9acd32 | |||
#663399 |