Graceful handling of color contrast check fails for oklch and oklab with none #4894
Description
Product
axe-core
Product Version
4.10.3
Latest Version
- I have tested the issue with the latest version of the product
Issue Description
Expectation
Color contrast checks return results for issues on the page, or partial results in event of an error with a specific color.
Actual
Color contrast checks return an error with no results.
How to Reproduce
A page with CSS like this produces the issue: oklch(0.961073 0.000047911 none / 0.2)
Additional context
It seems the source of this is ColorJS treats none as NaN in the version used in axe-core. They have a beta that resolves this in the v6 line that handles none and NaN properly so those colors don't fail.
Related issue:
#4269