Compatibility table – Color module
| Property | Presto 2.1 | Presto 2.2 + | WebKit 3 | Gecko 1.9 | Trident |
|---|---|---|---|---|---|
| color* | Yes | Yes | Yes | Yes | Yes |
| opacity | Yes | Yes | Yes | Yes | No |
| Unit | Presto 2.1 | Presto 2.2 + | WebKit 3 | Gecko 1.9 | Trident |
|---|---|---|---|---|---|
| HTML Colour keywords | Yes | Yes | Yes | Yes | Yes |
| SVG Colour keywords | Yes | Yes | Yes | Yes | Yes‡ |
| RGB | Yes | Yes | Yes† | Yes | Yes |
| RGBA | No | Yes | Yes† | Yes | No |
| HSL | Yes | Yes | Yes | Yes | No |
| HSLA | No | Yes | Yes | Yes | No |
| transparent | Yes** | Yes | Yes | Yes | Yes** |
| currentColor | Yes | Yes | No | Yes | No |
Browsers and Rendering engines
Each property and unit was tested in the latest version of each of the major rendering engines – Presto Core-2, WebKit, Gecko and Trident. KHTML wasn’t tested as they are working on transitioning to WebKit. The browsers used in the charts above were as follows:
- Presto 2.1
- Tested using Opera 9.5 final
- Presto 2.2
- Tested using Opera 10 alpha
- WebKit
- Tested using Safari 3 final
- Gecko 1.9
- Tested using Firefox 3 beta
- Trident
- With the absence of public builds, Trident was tested using the shipping version of IE7
Testing procedure
The browsers above were tested with tests from various sources including examples and previews on this site, and David Baron’s css3-color Conformance Test Suite.
Notes
- * Check the second table for units accepted for the various engines for the color property
- † WebKit incorrectly accepts a mixture of integers and percentages for RGB and RGBA
- ‡ Trident doesn’t support the
greykeyword - ** transparent is supported, but only in the CSS2.1 context