← All 49 free tools
FREE TOOL · LOCAL-FIRST
Color palette and contrast checker
Composite transparency against the selected background, use unrounded pass/fail math, and export the final palette values.
Composited foreground: rgb(0, 0, 0)
Contrast ratio: 21.0000:1
Normal text AA (4.5:1): pass
CSS: color: #000000; background: #ffffff;
JSON: {"foreground":"#000000","background":"#ffffff","ratio":21,"context":"normal-text"}