Free Tools

WCAG Contrast Checker

Check if your color combination meets WCAG AA and AAA accessibility criteria for screen and print.

FormFlow's WCAG contrast checker calculates the contrast ratio between text and background colors and instantly shows whether the combination meets WCAG 2.1 AA and AAA accessibility standards. Beyond digital screens, the tool includes 6pt and 8pt print previews for labels and packaging — useful for designers, regulatory analysts, and quality teams. Instant results, completely free, no account needed.

Colors

Preview

See how text looks at different sizes: screen (WCAG) and print (labels, packaging).

Normal size text

Screen — ~16px (WCAG normal text)

Large size text

Screen — 18pt+ or 14pt+ bold (WCAG large text)

Text at 6 points

Print — 6pt Montserrat (small labels)

Text at 8 points

Print — 8pt Montserrat (labels)

Result

21.0:1

Contrast ratio

WCAG AA

  • Normal text (4.5:1)
  • Large text (3:1)

WCAG AAA

  • Normal text (7:1)
  • Large text (4.5:1)

Print / Labels

  • 6pt (small labels) (7:1)
  • 8pt (labels) (4.5:1)

WCAG 2.1 — Normal text: body copy. Large text: 18pt+ or 14pt+ bold. For labels and print, higher contrast is recommended.

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Frequently asked questions