Colour contrast
For: Design
Contrast (minimum) (1.4.3 level AA)
https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html
Text (including images of text) must have a contrast ratio of at least 4.5:1. Larger text must have a ratio of at least 3:1.
To test colour contrast you need the hex value of the foreground and background colours.