[Android][Accessibility] WCAG 1.4.3: Text elements must have sufficient contrast against the background. (android.widget.TextView)

Issue

Text elements must have sufficient contrast against the background. (ColorContrast)

Similarly w/ TextView's in radio, checklist, and spinner inputs when using a dark host config (e.g. Teams Dark):

Target application

io.adaptivecards.adaptivecardssample

Element path

android.widget.TextView

How to fix

The text element has insufficient contrast of 2.553. Foreground color: #5e92c1, background color: #d7e4ef). Modify the text foreground and/or background colors to provide a contrast ratio of at least 4.5:1 for regular text, or 3:1 for large text (at least 18pt, or 14pt+bold).

Environment

This accessibility issue was found using Accessibility Insights for Android 2020.527.10 (axe-android), a tool that helps find and fix accessibility issues. Get more information & download this tool at http://aka.ms/AccessibilityInsights.

Start by reproducing the issue in the io.adaptivecards.adaptivecardssample app with a dark host configuration, focusing on android.widget.TextView elements in radio, checklist, and spinner inputs. Use Accessibility Insights for Android to inspect the reported colors; done means regular text reaches at least a 4.5:1 contrast ratio, or 3:1 for large text.