Does gradient buttons in web application comply with accessibility?

Question

Does anybody know if gradient buttons in web application comply with WCAG accessibility rules? We are working on high contrast mode for web application and I can't find any guidelines for that. Can we keep them or plain colors only should be used?

Answer 1

As long as you're color scheme passes color blind tests for accessibility, you should be alright. if you focus on a perceivable color scheme, users with color blind deficiencies should still be able to see contrast(s).

Answer 2

As albert stated, check for colour blindness, mainly in males and that you have a contrast of at least 4.5:1 for small to medium text and 3.5:1 for larger text (if not aaa). The Firefox add-on called colour-checker will assist in this.