Color Contrast Checker (WCAG)
Color Contrast Checker (WCAG) that runs entirely in your browser — nothing you paste is uploaded.
Contrast ratio: 4.48:1 WCAG AA (normal text): Fail WCAG AA (large text): Pass WCAG AAA (normal text): Fail WCAG AAA (large text): Fail
About this tool
Web and miscellaneous utilities cover the odd jobs of front-end and API work: checking WCAG color contrast, diffing two blocks of text, previewing Open Graph tags, turning a curl command into fetch(), or building a table from CSV.
How to use it
- Paste your input
Drop your text, code, or data into the input box. Color Contrast Checker (WCAG) runs on whatever you enter — no sign-up and no size limit beyond what your browser can hold.
- Read the result instantly
The output updates as you type, computed on your device. A valid / invalid badge tells you at a glance whether the input parsed.
- Copy it
Press Copy to put the result on your clipboard, ready to paste into your editor, terminal, or ticket.
Frequently asked
- Is my data uploaded to a server?
- No. Color Contrast Checker (WCAG) runs 100% in your browser tab, so whatever you paste never leaves your device — safe for tokens, configs, and private payloads.
- Does it work offline?
- Yes. Once the page has loaded it keeps working with no network, because all processing happens locally.
- Is there a size limit?
- No hard limit. It handles as much as your browser can hold in memory, and it all runs on-device.
SERBABISA · CAN DO ANYTHING