ToolsForgeLabs

Free SEO Tools

Free Online Contrast Checker

This free contrast checker runs entirely in your browser — no signup and no file uploads. Check foreground/background contrast ratios against WCAG AA and AAA for normal and large text.

This tool runs in your browser. Your inputs are processed on your device and are not uploaded to ToolsForgeLabs servers for this calculation. Privacy Policy

Inputs

Results

Contrast ratio
18.88:1
AA normal text
Pass
AA large text
Pass
AAA normal text
Pass
AAA large text
Pass

How to use this free tool

  1. Enter text and background colors.
  2. Review the ratio.
  3. Check AA/AAA status.
  4. Adjust colors as needed.

Formula

contrast = (L1 + 0.05) / (L2 + 0.05)

Examples

  • Body text

    Input: #111 on #FFF

    Output: 21:1 Pass AAA

Related searches

People looking for a contrast checker often also search for wcag contrast, color contrast ratio, accessibility contrast, aa aaa checker, wcag checker, and contrast ratio tool. This page covers that search cluster without duplicate URLs.

FAQ

What is a good contrast ratio?

WCAG AA needs at least 4.5:1 for normal text (3:1 for large text).

Does AAA matter?

AAA is stricter (7:1 normal text) and preferred for high accessibility.

Can I paste HEX?

Yes—enter HEX or RGB values for foreground and background.

How do I use a free contrast checker?

This free contrast checker runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

What is a contrast checker?

This free contrast checker runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

Is there a free online checker for contrast checker?

This free contrast checker runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

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