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Free Color Contrast Checker

Check text contrast for WCAG accessibility compliance. Instant AA/AAA ratings — free tool for designers & developers.

色彩对比度检查器

检查网页色彩对比度，确保符合 WCAG 无障碍标准

FREE — 即时无障碍检查，基于 WCAG 2.1 标准
vs
The quick brown fox jumps over the lazy dog
敏捷的棕色狐狸跳过了懒狗 — 12px 小字示例
对比度 -- : 1
AA 标准 — 普通文本 --
AA 标准 — 大号文本 (18px+) --
AAA 标准 — 普通文本 --
AAA 标准 — 大号文本 (18px+) --

How to Use

1

Enter your data

Input or paste your data into the tool above. Most tools accept direct typing, pasting, or file uploads.

2

Click calculate or process

Hit the relevant button to process your input. Results appear instantly without any page reload.

3

Copy or download your results

Use the built-in copy or download buttons to save your results. No data is stored on our servers.

Frequently Asked Questions

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