The Template:Color contrast conformance gives a "AAA", "AA" or "none" judgment for the level of conformance to WCAG 2.0 of two colors together, in terms of contrast ratio, where the colors can be either RGB #numbers (#56F3BB) or color names (green, darkorange, or NavahoWhite, etc.).

Code Result
{{Color contrast conformance|blue|white}} Contrast: blue & white, conformance level= AAA
{{Color contrast conformance|red|#FFcc00}} Contrast: red & #FFcc00, conformance level= none
{{Color contrast conformance|black|White|show=no}} AAA

Either parameter 1 or 2 can be a standard color name (in upper/lowercase letters) or an RGB #number, such as: #FF45BB. See: Web colors, for a full list of color names and the assigned RGB #number values. The option "show=no" will suppress showing the color names or numbers, and give just the "AAA", "AA" or "none" answer.

Accessibility of pairs of HTML colors
AAA AAA AAA AAA AAA AAA AA AA AA AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN
AAA AAA AAA AAA AAA AAA AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN
AAA AAA AAA AAA AA AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN
AAA AAA AAA AA AA AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN
AAA AAA AA AA AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN
AA AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN
AA Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AA AAA AAA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AA AA AAA AAA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AA AAA AAA AAA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AAA AAA AAA AAA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AAA AAA AAA AAA AAA
Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN Red XN AA AA AAA AAA AAA AAA AAA