Web platform features explorer - <code>alpha</code> and <code>colorspace</code> attributes for <code><input type=color></code>

The ability to control the opacity of a color picked using <input type="color"> and determine the colorspace of the selected color.

Status

Limited availability

MDN documentation

HTMLInputElement: alpha property
HTMLInputElement: colorSpace property
<input type="color">

Specifications

HTML (#attr-input-alpha), from HTML Workstream (WHATWG).

Browser support

Chrome ❌ See crbug.com/368059226
Chrome Android ❌ See crbug.com/368059226
Edge ❌ See crbug.com/368059226
Firefox ❌ See bugzil.la/1919718 Vendor position : positive
Firefox for Android ❌ See bugzil.la/1919718 Vendor position : positive
Safari 18.4 Released on 2025-03-31
Safari on iOS 18.4 Released on 2025-03-31

Web Platform Tests (WPT)

View the latest WPT test results for this feature

Developer votes

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