In the beginning we had 16 named colours, Aqua, Black, Blue, Fuchsia, Gray, Green, Lime, Maroon, Navy, Olive, Purple, Red, Silver, Teal, White, Yellow.
And then came the browser-safe HEX colour codes with pairs of 'digits' in the order red, green, blue.
The three-digit form '#f60' is converted into the six-digit form '#ff6600' by replicating digits.
There are 140 named colours, some with 'safe hex code' such as #99cc33, and most with all digits different. Next came other 'color' names which are not supported by the W3C standards. Browsers are not consistent in the way they handle colour - Internet Explorer 3 does not apply backgrounds to block elements, but only to the text content. Mozilla only acts when the code has # before the hex. This is especially true when we use the opening code '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
Now we are advised to use the hex form for any colour used on a web page. See my Complex notes for calculations using the decimal names of the color. (Australians use the spelling 'colour', computer language uses 'color'.)
aliceblue
1
#F0F8FF
240,248,255
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antiquewhite
2
#FAEBD7
250,235,215
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aquamarine
3
#7FFFD4
127,255,212
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azure
4
#F0FFFF
240,255,255
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beige
5
#F5F5DC
245,245,220
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bisque
6
#FFE4C4
255,228,196
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black
7
#000000
0,0,0
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blanchedalmond
8
#FFEBCD
255,235,205
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blue
9
#0000FF
0,0,255
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blueviolet
10
#8A2BE2
138,43,226
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brown
11
#A52A2A
165,42,42
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burlywood
12
#DEB887
222,184,135
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cadetblue
13
#5F9EA0
95,158,160
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chartreuse
14
#7FFF00
127,255,0
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chocolate
15
#D2691E
210,105,30
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coral
16
#FF7F50
255,127,80
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cornflowerblue
17
#6495ED
100,149,237
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cornsilk
18
#FFF8DC
255,248,220
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crimson
19
#DC143d
220,20,60
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cyan
20
#00FFFF
0,255,255
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darkblue
21
#00008B
0,0,139
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darkcyan
22
#008B8B
0,139,139
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darkgoldenrod
23
#B8860B
184,134,11
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darkgray
24
#A9A9A9
169,169,169
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darkgreen
25
#006400
0,100,0
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darkkhaki
26
#BDB76B
189,183,107
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darkmagenta
27
#8B008B
139,0,139
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darkolivegreen
28
#556B2F
85,107,47
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darkorange
29
#FF8C00
255,140,0
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darkorchid
30
#9932CC
153,50,204
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darkred
31
#8B0000
139,0,0
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darksalmon
32
#E9967A
233,150,122
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darkseagreen
33
#8FBC8F
143,188,139
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darkslateblue
34
#483D8B
72,61,139
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darkslategray
35
#2F4F4F
47,79,79
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darkturquoise
36
#00CED1
0,206,209
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darkviolet
37
#9400D3
148,0,211
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deeppink
38
#FF1493
255,20,147
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deepskyblue
39
#00BFFF
0,191,255
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dimgray
40
#696969
105,105,105
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dodgerblue
41
#1E90FF
30,144,255
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firebrick
42
#B22222
178,34,34
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floralwhite
43
#FFFAF0
255,250,240
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forestgreen
44
#228B22
34,139,34
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fuchsia
45
#FF00FF
255,0,255
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gainsboro
46
#DCDCDC
220,220,220
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ghostwhite
47
#F8F8FF
248,248,255
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gold
48
#FFD700
255,215,0
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goldenrod
49
#DAA520
218,165,32
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gray
50
#808080
128,128,128
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green
51
#008000
0,128,0
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greenyellow
52
#ADFF2F
173,255,47
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honeydew
53
#F0FFF0
240,255,240
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hotpink
54
#FF69B4
255,105,180
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indianred
55
#CD5C5C
205,92,92
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indigo
56
#4B0082
75,0,130
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ivory
57
#FFFFF0
255,255,240
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khaki
58
#F0E68C
240,230,140
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lavender
59
#E6E6FA
230,230,250
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lavenderblush
60
#FFF0F5
255,240,245
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lawngreen
61
#7CFC00
124,252,0
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lemonchiffon
62
#FFFACD
255,250,205
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lightblue
63
#ADD8E6
173,216,230
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lightcoral
64
#F08080
240,128,128
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lightcyan
65
#E0FFFF
224,255,255
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lightgoldenrodyellow
66
#FAFAD2
250,250,210
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lightgreen
67
#90EE90
144,238,144
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lightgrey
68
#D3D3D3
211,211,211
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lightpink
69
#FFB6C1
255,182,193
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lightsalmon
70
#FFA07A
255,160,122
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lightseagreen
71
#20B2AA
32,178,170
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lightskyblue
72
#87CEFA
135,206,250
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lightslateblue
73
#0000EB
0,0,235
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lightslateblue
73
#0000EB
0,0,235
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lightslategray
74
#778899
119,136,153
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lightsteelblue
75
#B0C4DE
176,196,222
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lightyellow
76
#FFFFE0
255,255,224
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lime
77
#00FF00
0,255,0
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limegreen
78
#32CD32
50,205,50
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linen
79
#FAF0E6
250,240,230
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maroon
80
#800000
128,0,0
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mediumaquamarine
81
#66CDAA
102,205,170
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mediumblue
82
#0000CD
0,0,205
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mediumorchid
83
#BA55D3
186,85,211
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mediumpurple
84
#9370DB
147,112,219
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mediumseagreen
85
#3CB371
60,179,113
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mediumslateblue
86
#7B68EE
123,104,238
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mediumspringgreen
87
#00FA9A
0,250,154
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mediumturquoise
88
#48D1CC
72,209,204
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mediumvioletred
89
#C71585
199,21,133
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midnightblue
90
#191970
25,25,112
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mintcream
91
#F5FFFA
245,255,250
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mistyrose
92
#FFE4E1
255,228,225
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moccasin
93
#FFE4B5
255,228,181
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navajowhite
94
#FFDEAD
255,222,173
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navy
95
#000080
0,0,128
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navyblue
96
#A0B0E0
160,176,224
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navyblue
96
#A0B0E0
160,176,224
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oldlace
97
#FDF5E6
253,245,230
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olive
98
#808000
128,128,0
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olivedrab
99
#6B8E23
107,142,35
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orange
100
#FFA500
255,165,0
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orangered
101
#FF4500
255,69,0
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orchid
102
#DA70D6
218,112,214
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palegoldenrod
103
#EEE8AA
238,232,170
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palegreen
104
#98FB98
152,251,152
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paleturquoise
105
#AFEEEE
175,238,238
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palevioletred
106
#DB7093
219,112,147
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papayawhip
107
#FFEFD5
255,239,213
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peachpuff
108
#FFDAB9
255,218,185
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peru
109
#CD853F
205,133,63
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pink
110
#FFC0CB
255,192,203
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plum
111
#DDA0DD
221,160,221
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powderblue
112
#B0E0E6
176,224,230
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purple
113
#800080
128,0,128
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red
114
#FF0000
255,0,0
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rosybrown
115
#BC8F8F
188,143,143
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royalblue
116
#4169E1
65,105,225
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saddlebrown
117
#8B4513
139,69,19
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salmon
118
#FA8072
250,128,114
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sandybrown
119
#F4A460
244,164,96
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seagreen
120
#2E8B57
46,139,87
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seashell
121
#FFF5EE
255,245,238
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sienna
122
#A0522D
160,82,45
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silver
123
#C0C0C0
192,192,192
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skyblue
124
#87CEEB
135,206,235
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slateblue
125
#6A5ACD
106,90,205
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slategray
126
#708090
112,128,144
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snow
127
#FFFAFA
255,250,250
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springgreen
128
#00FF7F
0,255,127
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steelblue
129
#4682B4
70,130,180
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tan
130
#D2B48C
210,180,140
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teal
131
#008080
0,128,128
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thistle
132
#D8BFD8
216,191,216
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tomato
133
#FF6347
255,99,71
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turquoise
134
#40E0D0
64,224,208
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violet
135
#EE82EE
238,130,238
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violetred
136
#00E0ED
0,224,237
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violetred
136
#00E0ED
0,224,237
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wheat
137
#F5DEB3
245,222,179
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white
138
#FFFFFF
255,255,255
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whitesmoke
139
#F5F5F5
245,245,245
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yellow
140
#FFFF00
255,255,0
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yellowgreen
141
#9ACD32
154,205,50
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Cyan is also called Aqua, Fuchsia is Magenta
Violetred is oddly named, for a shade of blue.
Some lists include Teal instead of Violetred,
others omit Darkslategray.
I have found 138 words are recognised as code for colours.
Navyblue and violetred may not be recognised by browser -
have substituted code #00E0ED for word violetred,
#0000EB is lightslateblue
and #A0B0E0 for navyblue as both as black by my computer