Buttons have role of button. Using a native HTML button or input type="submit" element is a better choice than creating a custom ARIA button.
Buttons should have accessible labels. By default, the accessible name is computed from any text content inside the button element.
A button should be triggered by pressing “Spacebar,” “Enter,” or “Return.”
The mouse cursor should be a hand icon (cursor: pointer).
Disabled buttons should have aria-disabled set to true.
When placing a button on a color other than standard background colors (Gray Light or White), make sure the colors of all states (except for disabled) still meet color contrast accessibility standards.
