SteelBlue1 is in there twice: 75 and 81 about colors

[docwhat]

In fact, scanning this it seems there are several duplicates:

• Purple: 5,93,129
• Blue3: 19,20
• DeepSkyBlue4: 23,24,25
• DeepSkyBlue3: 31,32
• Green3: 34,40
• SpringGreen3: 35,41
• SpringGreen2: 42,47
• DarkRed: 52,88
• DeepPink4: 53,89,125
• Purple4: 54,55
• Orange4: 58,94
• SlateBlue3: 61,62
• DarkSeaGreen4: 65,71
• Chartreuse3: 70,76
• CadetBlue: 72,73
• SteelBlue1: 75,81
• PaleGreen3: 77,114
• Chartreuse2: 82,112
• SeaGreen1: 84,85
• Aquamarine1: 86,122
• DarkMagenta: 90,91
• DarkViolet: 92,128
• MediumPurple3: 97,98
• Yellow4: 100,106
• DarkOliveGreen3: 107,113,149
• LightSkyBlue3: 109,110
• DarkSeaGreen3: 115,150
• LightGreen: 119,120
• PaleGreen1: 121,156
• Red3: 124,160
• Magenta3: 127,163,164
• DarkOrange3: 130,166
• IndianRed: 131,167
• HotPink3: 132,168
• MediumPurple2: 135,140
• LightSalmon3: 137,173
• Gold3: 142,178
• Yellow3: 148,184
• DarkSeaGreen2: 151,157
• DarkSeaGreen1: 158,193
• DeepPink3: 161,162
• Magenta2: 165,200
• MediumOrchid1: 171,207
• LightGoldenrod2: 186,221,222
• DarkOliveGreen1: 191,192
• DeepPink1: 198,199
• IndianRed1: 203,204
• HotPink: 205,206

[jonasjacek]

Hi @docwhat,
first of all, thanks for reporting and taking the time to inspect the issue. I have looked into this, and saw that other sources have the same 'issue'. So, although I do not know why this is the case, it does not really seem to be wrong. We see the same issue in http://vim.wikia.com/wiki/Xterm256_color_names_for_console_Vim for example.
This site for example, https://www.rapidtables.com/web/color/RGB_Color.html, lists only 155 color name codes for RGB. Maybe this is where the limitation in my 256 list originates from.

[docwhat]

It’s a bug if the string is in the list twice. Some one messed.

The original colors came from X11: https://en.m.wikipedia.org/wiki/X11_color_names

I’m guessing someone manually did the translation and messed up.

[jonasjacek]

I have investigated further. There seem to be other problems as well.
For now, I have put out an errata warning. I have to fix this asap.

[docwhat]

Assuming this script is accurate, you could use it to recalculate the colors from the Wikipedia article:

https://gist.github.com/MicahElliott/719710