xterm256-color-picker

Try it online right here

Related resources

256 Colors Cheat Sheet https://www.ditig.com/256-colors-cheat-sheet
Online table of colors https://jonasjacek.github.io/colors/
XOrg colors https://github.com/freedesktop/xorg-rgb/blob/master/rgb.txt
Vim colors https://github.com/vim/vim/blob/e30d10253f~/runtime/rgb.txt

Contributors

@casr
- contrast ratio for text vs background
- fix layout
- fix color tables
- add CSS and vim GUI colors
- include more colors in the greyscale ramp

Any contributions are welcome