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Documentation of accessibility observations for Deutsche Telekom – Mobilfunk & OneShop

1.4.3 Contrast (Minimum) (AA) Text content does not have enough color contrast

Priority: Critical Low Page: Apple Watch Familienkonfiguration Observation Permalink
Accompanying Files
Observation Details

Text content must meet minimum color contrast ratio of 4.5:1 to its background. Large text (>24px) content must meet minimum color contrast ratio of 3:1 to its background. The following text content does not meet the required minimum contrast ratios:

  • Link "Zusatzkarte" in FAQ item "Was sind die Vorteile der Apple Watch für Kinder?"

  • Link "Smart Connect" in FAQ item "Welcher Telekom Tarif eignet sich für die Apple Watch für Kinder?"

Remediation Notes

Ensure, all text content is clearly visible, using color contrast ratios of 4.5:1 and higher. For large text content a reduced contrast ratio of 3:1 is acceptable, but not recommended.

Especially color variants that barely meet color contrast ratio requirements for default background colors are subsceptible to fail minimum color contrast ratio, when used on non-default background colors. When a certain color barely meets color contrast ratio on default white background, ensure, this color variant is only used on said background color and provide a different foreground color variant for darker background colors.

Ideally, aim for enhanced contrast ratio 7:1 (see 1.4.6 Contrast (Enhanced) (Level AAA)), to often ensure passing minimum contrast ratio, even on non-default background colors.

Side Note: this success criterion is not specifically about identification of links. When a link would have no underline and its color is the only way to differentiate from surrounding text, it is considered a failure under 1.4.1 Use of Color. This criterion is for all text content.