Color Contrast Calculator (WCAG)
Contrast ratio between two hex colors and WCAG AA/AAA pass.
Frequently asked questions
What does the Color Contrast Calculator (WCAG) do?
Contrast ratio between two hex colors and WCAG AA/AAA pass. Enter your values and get an instant estimate in your browser — free, with no signup.
Is the Color Contrast Calculator (WCAG) free to use?
Yes. OpenCalcy calculators are free to use, work on mobile, and keep favorites privately in your browser.