Free tool
Contrast Checker
Check if text is readable on its background, against WCAG AA and AAA, and get the closest colour that passes.
Why it matters
Readable text is good design and the law.
AA is the usual target
Normal text needs 4.5 : 1 and large text 3 : 1. Most accessibility laws point to WCAG AA.
Grey text fails most often
Light grey on white is the most common problem on Webflow sites, especially for captions and footers.
Fix it in your variables
Change the colour once in your Webflow variables, and every place that uses it is fixed.