Contrast Batch Checker

Paste color pairs (e.g. “#111111 on #ffffff” or “name:#111111 on #ffffff”). Runs entirely in your browser.

Results (3/3)
#111111 on #ffffff
AAA (18.88:1)
Aa
FG #111111 • BG #ffffff
#6b7280 on #ffffff
AA (4.83:1)
Aa
FG #6b7280 • BG #ffffff
primary
AA (6.76:1)
Aa
FG #0ea5e9 • BG #0b1220