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The quick brown fox jumps over the lazy dog

18px
3.81:1

WCAG 2.1 Contrast Ratio

35.3APCA (WCAG 3.0 Draft)
Level: Fail
FAIL
AA Normal
≥ 4.5:1
PASS
AA Large
≥ 3:1
FAIL
AAA Normal
≥ 7:1
FAIL
AAA Large
≥ 4.5:1

1/4 WCAG criteria met

Color Blindness Simulation (All 8 Types)

Aa

Protanopia

3.75:1

Aa

Deuteranopia

3.75:1

Aa

Tritanopia

3.55:1

Aa

Protanomaly

3.78:1

Aa

Deuteranomaly

3.78:1

Aa

Tritanomaly

3.76:1

Aa

Achromatopsia

3.70:1

Aa

Achromatomaly

3.63:1

WCAG 2.1 AA: ≥ 4.5:1 (normal) or ≥ 3:1 (large). AAA: ≥ 7:1 (normal) or ≥ 4.5:1 (large).
APCA (WCAG 3.0 Draft): ≥ 90 Preferred, ≥ 60 Good, ≥ 45 Fair.

How to Use Color Contrast Checker

1

Open Color Contrast Checker

Navigate to the Color Contrast Checker tool page on ConvertPro.

2

Enter Your Data

Type, paste, or upload the file or data you want to process.

3

Choose Your Settings

Select options, formats, or parameters for your specific use case.

4

Get Results

Your output appears instantly. Copy, download, or share your result.

Free Online Color Contrast Checker Tool

Use our free Color Contrast Checker tool online — no downloads, no registration, no hassle. All processing happens locally in your browser using cutting-edge web technologies. Your data never leaves your device.

Whether you're a professional, student, or casual user, our Color Contrast Checker provides fast, accurate results with an intuitive interface optimized for both desktop and mobile devices.

ConvertPro offers 90+ free online tools across image, PDF, video, developer, text, math, and utility categories — all 100% free and private.

Frequently Asked Questions About Color Contrast Checker

Is this developer tool free?
Yes! All ConvertPro developer tools are completely free with no limits.
Is my code sent to any server?
No. All processing happens locally in your browser. Your code and data never leave your device.
What browsers are supported?
All modern browsers: Chrome, Firefox, Safari, and Edge. JavaScript must be enabled.