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Documentation of accessibility observations for Deutsche Telekom – Mobilfunk & OneShop

1.4.11 Non-text Contrast (AA) "Play" buttons for video pop-ups do not have strong enough color contrast

Priority: Critical Low Page: Kider Uhr GPS Oneshop Observation Permalink
Accompanying Files
Observation Details

The play buttons in video pop-up thumbnails are used as interactive elements to start the video playback. Their colors do not have high enough color contrast ratio against the colored background. A color contrast minimum of 3:1 must be met for all interactive elements, including buttons. The contrast ratio should be met for the whole interactive element as well.

Remediation Notes

Ensure high enough color contrast of all interactive elements. In case of the video play buttons, the possible remediation could be to make the button non-transparent and add a different color outer outline. The so-called "oreo-outline" ensures visibility on both light and dark backgrounds:

outline: 1px solid white;
box-shadow: 0 0 0 3px black;
background-color: white;

Side note: the buttons do have visible focus outlines when navigated to by keyboard. Ensure, when setting a button outline for the default un-focused and un-selected state, the color contrast ratio minimum is also met between un-focused and focused state, to not run into failure of 2.4.7 Focus Visible.