CSS PLAYGROUND
Free Color Accessibility Checker online
WCAG matrix audit for full palettes.
Use Color Accessibility Checker to wCAG matrix audit for full palettes in seconds, straight from your browser. Enter your file, review the live Color Accessibility Checker output, then copy or download it. Color Accessibility Checker processes everything in your own browser, so your data never leaves your device.
- Free to use
- No signup
- Private and local
- Unlimited use
Why use Color Accessibility Checker
- wCAG matrix audit for full palettes without installing software
- Your file is processed on your device by Color Accessibility Checker, never uploaded
- Color Accessibility Checker needs no account, email address or payment details
- Color Accessibility Checker shows live output that updates as you type
- Color Accessibility Checker is keyboard accessible and screen-reader friendly
- Color Accessibility Checker is free forever, with no watermark on the result
Color Accessibility Checker runs entirely inside your browser. Your file is never uploaded, stored or shared, and nothing is retained once you close the tab.
How to use Color Accessibility Checker
- Enter your file Paste or type your file into the input panel above.
- Adjust the options Set the options that control how Color Accessibility Checker handles your input.
- Apply the change Color Accessibility Checker works instantly on your device, with no queue and no upload wait.
- Copy or download Copy the output to your clipboard or download it as a file, free and unlimited.
Benefits
Private by design
Your file stays on your device while Color Accessibility Checker works. Color Accessibility Checker never sends it to a server, so confidential work stays confidential.
Instant results
There is no upload step, so Color Accessibility Checker starts the moment you add your file.
No signup, no limits
Use Color Accessibility Checker as many times as you want. Color Accessibility Checker asks for no account, adds no watermark and keeps no paid tier gating the output.
Works on any device
Color Accessibility Checker runs in any modern browser on desktop, tablet and phone, with a keyboard-accessible interface throughout.
Who it is for
For designers
Designers use Color Accessibility Checker to prepare assets for handoff without installing software: wCAG matrix audit for full palettes on a shared or locked-down machine.
For marketers
Color Accessibility Checker helps marketers publish campaign assets quickly, since your file never leaves the laptop it was created on.
For freelancers
Color Accessibility Checker helps freelancers send client deliverables quickly, since your file never leaves the laptop it was created on.
How it works
Color Accessibility Checker parses your input in the browser and walks its structure to collect the measurements shown on screen. Color Accessibility Checker is read-only: the source is held in memory for the session and discarded when you close the tab.
Frequently asked questions
Is Color Accessibility Checker free to use?
Yes. Color Accessibility Checker is completely free with no account, no trial and no usage cap. Every feature on this page is available on the first visit.
Does Color Accessibility Checker upload your file to a server?
No. Color Accessibility Checker processes your file inside your browser, so it never reaches a DocTools server. That also means the tool keeps working if your connection drops mid-task.
Is there a limit on how much input I can use?
Color Accessibility Checker handles inputs into the megabytes without trouble; the only real limit is how much your browser tab can hold in memory.
Do I need to install anything to use Color Accessibility Checker?
No installation is needed. Color Accessibility Checker runs in Chrome, Edge, Firefox and Safari, on desktop and on mobile, with no extension or plugin.
Can I use Color Accessibility Checker on a phone or tablet?
Yes. The Color Accessibility Checker interface adapts to small screens and supports touch input, though very large jobs are faster on a desktop browser.
What happens to your file when I close the tab?
It is discarded. Color Accessibility Checker keeps everything in temporary browser memory, so closing the tab removes every trace of the session.
Related tools
- WCAG Color Pair | Test contrast for accessibility compliance
- Image Color Palette | Extract dominant colors from any image
- Color Palette Generator | Generate harmonious color palettes
Last updated: 2026-09-07