Kilotest: Diagnoses of contrast poor violation by HTML element 381 on Buy Nothing Project page

Basics

About the page

About the issue

About the violator

Diagnoses

Here is how rule engines diagnose the contrast poor issue for HTML element 381 of the Buy Nothing Project page.

  1. Elements must meet minimum color contrast ratio thresholds; Element has insufficient color contrast of 4.31 (foreground color: #ffffff, background color: #248783, font size: 15.0pt (20px), font weight: normal). Expected contrast ratio of 4.5:1

    Rule engine: Axe (Deque)

    Rule: color-contrast

  2. This element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 4.31:1. Recommendation: change background to #20837f.

    Rule engine: HTML CodeSniffer (Squiz Labs)

    Rule: E-WCAG2AAA.Principle1.Guideline1_4.1_4_6.G18.Fail

  3. Text contrast of 4.31 with its background is less than the WCAG AA minimum requirements for text of size 20px and weight of 600

    Rule engine: Accessibility Checker (IBM)

    Rule: text_contrast_sufficient

  4. Text must have sufficient contrast against its background

    Rule engine: Pour (David Yarham and Geoffrey Crofte)

    Rule: color-contrast

  5. Element has insufficient color contrast of 4.31:1 (foreground: #ffffff, background: #248783, font size: 20px, font weight: normal). Expected contrast ratio of 4.5:1 (normal text).

    Rule engine: SureA11y (Jorge Rumoroso)

    Rule: contrast-minimum