The following page shows accessibility issues in various projects in the standard (light) theme and the new night theme (aka dark mode). Ccommunities can use this tool to identify high priority issues for them to fix. The WCAG color contrast checker Chrome extension can help identify colors that should be changed to meet guidelines.

A recommendations page should provide all the guidance needed to address issues for the night theme.

When a community has fewer errors in the night mode theme than the light mode theme, the web team will consider broadening the release to desktop and all logged in users. Thank you in advance for your help!

wikipedia.org

Mobile

Misc

MediaWiki.org

Wikivoyage.org

Wikibooks.org

Wikisource.org

wiktionary.org