alpha and colorspace attributes for <input type=color>
Limited availability
The ability to control the opacity of a color picked using <input type="color"> and determine the colorspace of the selected color.
Browser support
- Chrome Not supported Bugs: 368059226
- Chrome Android Not supported Bugs: 368059226
- Edge Not supported Bugs: 368059226
- Firefox Not supported Position: positive Bugs: 2047120 1919718
- Firefox for Android Not supported Position: positive
- Safari 18.4 Released on 2025-03-31
- Safari on iOS 18.4 Released on 2025-03-31
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MDN documentation
Specifications
- HTML (#attr-input-alpha), from HTML Workstream (WHATWG).
Web Platform Tests (WPT)
View the latest WPT test results for this featureView as JSON | Edit this feature | Report an issue | Web-features entry: source, dist