Contrast Tools
Test the contrast of two colors to ensure high readability.
Contrast Tools launched on October 11, 2021 with 6 votes, #1,464 of 2,933 launches that month. The site was still online in September 2026, 4 years on.
What it does
Test the contrast of two colors to ensure high readability using both the Advanced Perception of Color Algorithm (APCA) and the classic contrast ratio.
Test the contrast of two colors to ensure the highest measure of readability
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