Discussion of the issue is available in Issue 9 and Pull Request 100.
The visual presentation of graphical objects that are essential for understanding
the content or functionality have a contrast ratio of at least 4.5:1 against the adjacent color(s), except for the following:
- For graphical objects with a minimum width and height of at least 3 CSS pixels, the graphic has a contrast ratio of at least 3:1.
- Non-text content that is primarily intended to create a visual sensory experience
has no contrast requirement;
- Graphics that are part of a logo or brand name have no minimum contrast requirement.
- A particular presentation of the graphical is essential to the information being conveyed.