As of now Base10 #222 in combination with Accent50 #36c fails WCAG 2.0 level AA slightly by providing 2.96:1 contrast.
While amending Accent50 seems not only problematic from a branding & visual disruption perspective, Base10 is currently the only base that doesn't follow the blue tint logic and would be relatively easy to amend.
Proposing therefore changing Base10 from #222 to #202122 to reach required 3:1 contrast ratio.
Proposal and Process
- Agree on color amendment – agreed on in Design Style Guide meeting of 2020-04-07
- Rollout to
- Style Guide,
- WikimediaUI Base and
- OOUI in same release cycle
- Slowly rolling out to further code occurrences as well
Note, Wikimedia deployed Translate extension is excluded from color updates, as it's completely out of sync from UI pattern perspective and single color updates would just side-track extension.