Contrast Checker
WCAG 2.1 contrast for text, large text and UI components — with automatic fixes.
1.53 : 1
The quick brown fox
Large text · 18.66px bold or 24px regular
Normal text — body copy and controls
AA normal ✗AA large ✗AA UI 3:1 ✗AAA normal ✗AAA large ✗
AA: ≥4.5 normal, ≥3 large/UI. AAA: ≥7 normal, ≥4.5 large.
APCA (additional signal)
Accessible Perceptual Contrast Algorithm — bronze reference ≈75.
24 Lc
Poor
APCA is shown as a secondary perceptual signal — WCAG 2.1 ratio remains the compliance metric for accessibility conformance.
Suggested fixes
The closest shades of your text color that pass the target.
#547D55 · 4.53:1
Passes AA normal text
#3E5D40 · 7.08:1
Passes AAA normal text
#000000 · 20.13:1
Best text color on this background
Palette matrix
Paste a palette (comma or space separated) to see every text/background pairing at once.