WCAG color contrast info in color picker

[Sebastian]

Reported on blog ​comment section

I'd love to see WCAG color contrast info in the CKEditor color picker. Either the ratio of foreground to background color, as ​this site provides, or a simple WCAG A, AA, or AAA status.

[Matt Clare]

The WCAG2 conformance requirements are: LEVEL A: 3:1 LEVEL AA: 4.5:1 LEVEL AAA: 7:1

Here are two examples of a JavaScript based contrast ratio calculators: ​http://webaim.org/resources/contrastchecker/ ​http://www.msfw.com/accessibility/tools/contrastratiocalculator.aspx

[Mike Gifford]

This is what we've tried to do in Drupal:

​https://drupal.org/node/134359

It's still an open issue in Drupal 8, but hopefully it gets in before the release. Still needs more work to be done.

I'm not sure what can be pulled from this for use with CKEditor, but especially since Drupal 8's shipping with CKEditor there might be some room for overlap.