Best practices for building accessible apps

Color contrast ratio

The color contrast ratio between text color and background color in your app should be at least 4.5:1.
Large-scale text, or images containing large-scale text should have a contrast ratio of at least 3:1.
For more details on accessibility standards concerning color contrast, refer to WCAG 2.2.

Designing your app to be responsive and multi-device friendly also provides accessibility benefits to users of your app.

Use Container controls in your app where possible. Set your container control to allow wrapping and scrolling. Additionally, set a fixed container width along with a maximum width of 100%. This ensures controls wrap to the next line, when there is not enough space available.
Set the flex grow and flex shrink properties of the Container control to 1. This ensures the Container uses all of the available space, but does not expand beyond it.