When I use the following command to set the color of my vim,
:highlight Error ctermfg=#00afff it prompts E421: Color name or number not recognized: ctermfg=#00afff
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2 Answers
ctermfg and ctermbg use indices into the limited color palettes (8 / 16 / 88 or 256 colors) of terminals and do not support the full 24-bit RGB values.
I think you're looking for the 'termguicolors' option, which makes Vim apply the GUI color attributes to capable terminals. Colors (by name or #RGB) are specified via guifg / guibg; only cterm is used for text attributes.
- Thanks again @Ingo-Karkat: you are always the one answering the question I am looking for. So thank so so much from the other side of the cable.Tinmarino– Tinmarino2020-09-04 01:48:04 +00:00Commented Sep 4, 2020 at 1:48
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It's because :h highlight-ctermfg says:
ctermbg={color-nr} *highlight-ctermbg* The {color-nr} argument is a color number. Its range is zero to (not including) the number of tui-colors available. The actual color with this number depends on the type of terminal and its settings. [...] The following (case-insensitive) names are recognized: *cterm-colors* NR-16 NR-8 COLOR NAME ~ 0 0 Black 1 4 DarkBlue 2 2 DarkGreen 3 6 DarkCyan 4 1 DarkRed 5 5 DarkMagenta 6 3 Brown, DarkYellow 7 7 LightGray, LightGrey, Gray, Grey 8 0* DarkGray, DarkGrey 9 4* Blue, LightBlue 10 2* Green, LightGreen 11 6* Cyan, LightCyan 12 1* Red, LightRed 13 5* Magenta, LightMagenta 14 3* Yellow, LightYellow 15 7* White The command is not supposed to support hex color mode.