Utilities / Local processing

Color Contrast Checker

Calculate contrast between opaque text and background colors.

How to use Color Contrast Checker

  1. Enter or select the input you want to use.
  2. Choose the options needed for your result.
  3. Run Color Contrast Checker and check the result before sharing or downloading.

What this tool does

WCAG thresholds depend on text size and weight.

Frequently asked questions

Does this tool upload my content?

Processing runs in your browser. Your selected content is not sent to a conversion server by this version.

What should I check before using the result?

WCAG thresholds depend on text size and weight.

Privacy

Your input is processed in your browser. This version does not send document content to a conversion server and includes no advertising or analytics scripts. Loading the website requires a network connection.

Operator: Francescco Pernice Botta. Contact: klabindustries.hq@gmail.com.

Terms

Use this tool only with content you are allowed to process. Check the result before relying on it.

Contact

Operator: Francescco Pernice Botta. Contact: klabindustries.hq@gmail.com.