1.4 Distinguishable

Make it easier for users to see and hear content including separating foreground from background.


Content must be distinguishable to understand and operate it. If you can't tell a form field is required because its only indicator is that the text is red (and you have a red-green color deficiency), then you won't be able to tell the difference between required and optional form fields.

Checks if your content is distinguishable: