ARC compares foreground text with incorrect parent container background color

[aaronbnb]

Describe the bug

ARC Toolkit compares foreground text with the incorrect parent background color. ARC compares the text with a parent container's background color which is not visually rendered on the page.

To Reproduce

1. Go to Santa Fe Opera homepage
2. View Large text has insufficient color contrast issues
3. View the <h4> flagged

Expected behavior

ARC compares the foreground text with the appropriate parent background color. If a parent element has a level of reduced opacity, compare the foreground text with the parent container's background color through the transparency level set by the intermediate background with a transparency level.

Screenshots

Version information

• Browser and version: Chrome
• ARC Toolkit version: 5.7.2

Notes: Reported by Santa Fe Opera

[otygblodhemn]

Same issue.

In a details element, children on white background and black color are flagged as "Insufficient normal text contrast".

There is no parent whith these colors in DOM : backgroundColorHEX: #0e0e0e and backgroundColorRGB: rgb(14, 14, 14).