Best practices for building accessible apps

颜色对比度

• 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.

• 有关颜色对比度的无障碍功能标准的更多详细信息，请参阅WCAG 2.2 。

响应式设计

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

• 尽可能在应用程序中使用容器控件。 设置容器控件以允许换行和滚动。 此外，请设置固定容器宽度以及最大宽度 (100%)。 这可确保在可用空间不足时，控件换行至下一行。

• 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.