UnitCraft utility
WCAG contrast checker
Relative luminance formula (WCAG 2.x) returns a ratio from 1–21. Does not replace full design review or non-text rules.
Calculator
Ratio: 14.48
- AA normal: ✓ pass (≥4.5:1)
- AAA normal: ✓ pass (≥7:1)
- AA large: ✓ pass (≥3:1)
Common thresholds
Normal text AA: 4.5:1, AAA: 7:1.
Large text AA: 3:1 (as defined by WCAG).
Frequently asked questions
- Alpha / gradients?
- This tool is solid hex only; layered UI needs manual sampling.
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