Button Color Contrast Ratios WGA Level A 3:1 WGA Level AA 4.5:1 WGA Level AAA 7:1 (regular text) or 4.5:1 (large text) Style Default Hover Click here 1.85:1 10.73:1 Click here 5.77:1 10.73:1 Click here 5.77:1 10.73:1 Click here 7.52:1 10.73:1 Click here 10.73:1 7.52:1 Click here 10.73:1 10.73:1