I finally found a color contrast checker that actually works for low-vision users | Designing for Accessibility

Paul Miller · 2026-07-26T22:10:06.371742+00:00

I was testing a pastel green on white for a client's site last week and every free tool I tried said it passed WCAG AA. My friend who has low vision looked at it and said it blended together for her. Turned out the tools were using different color perception models - I switched to one that simulates several types of color blindness and it flagged the combo immediately. Has anyone else caught false passes from the common checkers?

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I finally found a color contrast checker that actually works for low-vision users | Designing for Accessibility - The Design Community Hub