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Documentation of accessibility observations for Deutsche Telekom – Mobilfunk & OneShop

1.4.1 Use of Color (A) Map layers solely rely on color difference

Priority: Critical Medium Page: Mobilfunk Netzausbau Observation Permalink
Accompanying Files
Observation Details

Options in map layers rely on color alone to be identified. Doing so, while not meeting contrast ratio minimum (3:1) is an accessibility issue.

Remediation Notes

Preferably another mechanism, additionally to color, is used to differentiate the option layers.

This can be icons or forms (like "Schraffur") for both the "dot" in the options menu and the actual map part.

This could also be an outline that meets color contrast minimums for all color combinations. This must be set so that all polygons in the map are using the outline.