Contrast checker

Your colors
Click a color to adjust it. Paste any HEX, RGB, HSL or OKLCH value.

Paste a HEX, RGB, HSL or OKLCH value.

68%
40%
237°
#0EA5E9 on #FFFFFF
Is this text readable on this background?

Large heading

Body text at 16px. Readable text helps everyone, including people with low vision and anyone reading a screen in bright sunlight.

Small print at 12px is the hardest to read.

Results

WCAG 2.2 ratio2.77:1
APCA contrastLc 53Large text and headings
  • Body text · AA4.5:1Fail
  • Large text · AA3:1Fail
  • Icons and borders · AA3:1Fail
  • Body text · AAA7:1Fail
  • Large text · AAA4.5:1Fail

Large text is 24px, or 18.5px bold. APCA is the newer method planned for WCAG 3; a negative Lc means light text on a dark background.

Make it pass

The closest colors that pass. Only lightness changes.

  • Change the text#0EA5E9#007EB5· 4.51:1
  • Change the background#FFFFFF#333333· 4.56:1

Contrast 2.77 to 1, fails AA for body text