How to detect if the OS is in dark mode in browsers?

Question

Similar to \"How to detect if OS X is in dark mode?\" only for browsers.

Has anyone found if there is a way to detect if the user\'s system is in the new OS X Dark M

Answer 1

This is currently (September 2018) being discussed in "CSS Working Group Editor Drafts". Spec has launched (see above), available as a media query. Something has already landed in Safari, see also here. So in theory you can do this in Safari/Webkit:

@media (prefers-dark-interface) { color: white; background: black }

But it seems that this is private. On MDN a CSS media feature inverted-colors is mentioned. Plug: I blogged about dark mode here.