[csswg-drafts] [css-color-hdr] Define "media white" better (#11346)

jyasskin has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-color-hdr] Define "media white" better ==
https://drafts.csswg.org/css-color-hdr/ defines "media white" as all of
* the color of a normal white background, or of white text on a dark background
* 80 cd/m²
* 200 cd/m²
* 203 cd/m²
* whatever the user sets it to

I've also heard a definition that it's meant to be the color of a white piece of paper held next to the monitor, and @Myndex says in https://github.com/w3c/csswg-drafts/issues/3435#issuecomment-733434472 that it should be (or default to) 5x the ambient surrounding light.

It'd be good to pick a single definition for the web's purposes. The conflicting definitions from sRGB and rec2100-pq should be noted, and the spec should say how to adapt them to the user's choice of luminosity (with results for PQ depending on the resolution of #10460).

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/11346 using your GitHub account


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Received on Tuesday, 10 December 2024 17:58:15 UTC