Alternatives to WhoCanUse
A web tool showing how a text and background color pair looks to people with various vision conditions. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
WhoCanUse
A web tool showing how a text and background color pair looks to people with various vision conditions.
Replacements
Listings that take over the same core job as WhoCanUse.
WebAIM Contrast Checker
An online checker that tests foreground and background color contrast against WCAG AA and AAA levels.
WebAIM Contrast Checker reports WCAG AA and AAA results for normal text, large text and UI components with shareable permalinks, but does not simulate vision conditions.
Also worth comparing
These listings name WhoCanUse as their own alternative, so the relationship runs both ways.
Toptal Colorblind Web Page Filter
A web tool that renders a web page through color blindness filters to test its design.
WhoCanUse previews a single text and background color pair across color blindness and other vision conditions, with open source code, but does not scan a live page.
Similar software
Related functionality, not a direct replacement.
Coblis
A browser-based simulator that shows how an image looks to people with color vision deficiencies.
Adobe Color
A free web tool from Adobe for building color palettes from harmony rules, images and accessibility checks.
Paletton
A long-running web color scheme designer built around a color wheel and classic harmony rules.