Color contrast checker
Calculate text contrast and WCAG AA/AAA thresholds.
A simple path to your result
Paste text or open a local file, adjust options, then copy or download the result.
Processed in this browser tab
Good to know
Inputs are processed locally in this browser tab.
How to use color contrast checker
Enter or paste your input.
Review the available options.
Process and download or copy the result.
When it helps
Check whether text and background colors meet a contrast target.
Formats and limits
Input: text entered in the page. Output: plain text. Browser support and available device memory can affect large jobs.
Inputs are processed locally in this browser tab.
Privacy and local processing
The selected content is processed in this browser tab. GoldieKit loads application code and, for portrait background removal, model files from the site; the tool does not upload your input for processing. See the privacy notice for network and hosting details.
Common questions
Which formats does this tool handle?
Input: text entered in the page. Output: plain text.
Is an account required?
No. You can use this tool in your browser without creating an account.