[1] Improving Color on the Web | WebKit ( (2016-08-23 20:34:53 +09:00)) <https://webkit.org/blog/6682/improving-color-on-the-web/>

[2] [mediaqueries-4] Inline enough info about color spaces (frivoal著, 2017-08-14 19:24:54 +09:00) <https://github.com/w3c/csswg-drafts/commit/45ed68824bd40f648cc5250960e13466b94d36af>