I'm #colorblind and I use https://xkcd.com/color/rgb/ frequently.
Randall 'xkcd' Monroe did a survey of over 100,000 readers where he showed them random rgb colors and said "what would you call this?" and afterwards he did his best to sort the results into the most popular color names and the colors they refer to.
It's like a box of Crayola for the internet. Finally, my colorblind self can grab a sample of "dark magenta" that doesn't just look like "grape purple" to everyone else.
The data is freely available as a .txt file under CC0, which I've converted into a .css file here: https://git.hatspace.net/nycki/nycki.net/src/branch/main/static/xkcd.css
so now when I want a color on my website I can just write `color: var(--xkcd-off-white)` or so on. it's really convenient :)