#rrggbbaa hex color notation
- CRThe CSS Color Module Level 4 defines new 4 & 8 character hex notation for color to include the opacity level.
Chrome
- 4 - 51: Not supported
- 52 - 61: Disabled by default
- 62 - 125: Supported
- 126: Supported
- 127 - 129: Supported
Edge
- 12 - 18: Not supported
- 79 - 125: Supported
- 126: Supported
Safari
- 3.1 - 9.1: Not supported
- 10 - 17.4: Supported
- 17.5: Supported
- 17.6 - TP: Supported
Firefox
- 2 - 48: Not supported
- 49 - 126: Supported
- 127: Supported
- 128 - 130: Supported
Opera
- 9 - 38: Not supported
- 39 - 51: Disabled by default
- 52 - 109: Supported
- 110: Supported
IE
- 5.5 - 10: Not supported
- 11: Not supported
Chrome for Android
- 126: Supported
Safari on iOS
- 3.2 - 9.3: Not supported
- 10 - 17.4: Supported
- 17.5: Supported
- 17.6 - 18.0: Supported
Samsung Internet
- 4: Not supported
- 5 - 7.4: Disabled by default
- 8.2 - 24: Supported
- 25: Supported
Opera Mini
- all: Not supported
Opera Mobile
- 10 - 12.1: Not supported
- 80: Supported
UC Browser for Android
- 15.5: Supported
Android Browser
- 2.1 - 4.4.4: Not supported
- 126: Supported
Firefox for Android
- 127: Supported
QQ Browser
- 14.9: Supported
Baidu Browser
- 13.52: Supported
KaiOS Browser
- 2.5: Not supported
- 3: Supported
Only supported in Android WebViews in apps that target Android Pie, due to this issue
- Resources:
- JS Bin testcase