Strict criteria for 1.4.3. In 1.4.3 I was requesting a 3:1 contrast ratio, but even bigger letters require a contrast ratio of 4.5:1.
|Principle||Perceivable||Information and user interface components must be presentable to users in ways they can perceive.|
|Guideline||Distinguishable||Make it easier for users to see and hear content including separating foreground from background.|
|For visual presentation of text and character images, there is a contrast ratio of at least 7: 1.|