Kilotest: Diagnoses of text contrast not testable violation by HTML element 274 on Mozilla Foundation page

Here is how tools diagnose the text contrast not testable issue for HTML element 274 of the Mozilla Foundation page.

Basics

• About the text contrast not testable issue
  • Why it matters: Text may be difficult to read
  • Priority: lowest
  • Related WCAG standard: 1.4.3
• About the Mozilla Foundation page
  • URL: https://www.mozilla.org/en-US/
  • Tested on 2026-04-03 at 03:56
• About HTML element 274
  • Take me there
  • Tag name: A
  • Text: Learn about us
  • Start tag: <a href="/en-US/about/" class="m24-c-cta" data-cta-text="Learn about us">
  • XPath: /html/body/div[2]/main[1]/div[1]/section[1]/div[1]/p[2]/a[1]
  • Bounding box: x = 272, y = 563, width = 226, height = 38

Diagnoses

1. This element's text is placed on a background image. Ensure the contrast ratio between the text and all covered parts of the image are at least 4.5:1.

   Tool: HTML CodeSniffer (Squiz Labs)

   Rule: W-WCAG2AAA.Principle1.Guideline1_4.1_4_6.G18.BgImage

2. [failed] Element has gradient with contrast ratio lower than minimum.

   Tool: QualWeb (University of Lisbon)

   Rule: QW-ACT-R37