Contrast checker
Pick a text color and a background color to see the WCAG 2 ratio with AA/AAA results and the APCA Lc.
Contrast ratio Contrast ratio: the brightness difference between two colors, from 1:1 to 21:1. Higher is easier to read.
APCA Lc APCA: a newer perceptual contrast measure from the WCAG 3 draft. Lc runs about 0–106; higher is easier to read. The sign shows polarity (dark text on light, or light on dark).
- AA (normal)
- AA (large)
- AAA (normal)
- AAA (large)