Thanks, that's the real best one. I tried to find it with HN's search engine but failed because I forgot about the weird TLD.

That one actually hurts to look at on a calibrated monitor. Like, I literally get migraines from that contrast.

A lesson on why CSS should be able to specify the nits and colorspace you’d like your content to be displayed in, so it can be readable on your shitty screen, and avoid giving me headaches on my screen.

Well, if you do not like white background, just change default background in your browser config. I have light gray and it is perfect. I do not see why websites should override default colors unless they have a good reasons for specific colors.

Also, the color calibration AFAIK does not specify brightness. Perhaps the headaches are not from contrast, but from too much brightness?

Brightness is also specified for different media — between 100 and 300 nits for SDR content, and 1000 nits for HDR.

Text becomes painful if the contrast is too high, but if you have a cheap screen at 70 nits it won't ever be an issue.