#RRGGBBAA

[ZoeBijl]

As defined in CSS Color Module Level 4.

[neoncitylights]

+1

Edit: This should include the shorthand 4 digit version also, #RGBA

[cvrebert]

Possibly overlaps with #2079

[rik]

Firefox will support this soon: https://twitter.com/davidbaron/status/729711324884656128

[dbaron]

Chromium bug
Gecko bug
WebKit bug

[jensimmons]

+1

[Schweinepriester]

+1
apparently now in firefox: https://twitter.com/patrickbrosset/status/732859240147243008

[laukstein]

Landed in Firefox 49 https://bugzilla.mozilla.org/show_bug.cgi?id=1271191

[laukstein]

Just landed under Chrome 52 https://bugs.chromium.org/p/chromium/issues/detail?id=76362#c34

[ZoeBijl]

Thanks for all the updates!

Just tested: this works in Safari TP 5!

And for the stats: doesn't work in Safari 9.1.1

[Bisaloo]

+1

[iant-ee]

+1

[Ugoku]

+1

[laukstein]

Landed in

• Chrome 52 https://www.chromestatus.com/feature/5685348285808640
• Opera 39 https://dev.opera.com/blog/opera-39/
• Firefox 49 https://developer.mozilla.org/en-US/Firefox/Releases/49

[Mottie]

Other css level 4 color proposals related to this issue:

• #RGBA (4 digit) notation.
• rgba() will support a percentage in the alpha channel.
• hsla() will support a percentage in the alpha channel.
• hwb() notation.
• lab() & lch() notations.
• gray().
• @color-profile & color() function.
• device-cmyk() function.
• color-mod() function .

[tenhobi]

https://css-tricks.com/8-digit-hex-codes/

[jimmywarting]

@Mottie i think rgba & hsla has been around for a long time? Anyhow nice list, learn something new everyday i didn't know about :)

[ZoeBijl]

Is there something we can do to actually get this up on the website? Bit of a shame to have all this info collect dust in a GitHub issue.

[Mottie]

@jimmywarting

i think rgba & hsla has been around for a long time?

Those methods have been, but the alpha channel previously only accepted a fraction:

rgba(0, 0, 0, 0.5)
hsla(0, 0%, 0%, 0.5)

With CSS4, they now also accept percentage values:

rgba(0, 0, 0, 50%)
hsla(0, 0%, 0%, 50%)

[Fyrd]

@MichielBijl Anyone's able to submit new features, see the CONTRIBUTING file. Alternatively just wait until I get around to it. :)

[ben-eb]

I've created a pull request for this, let me know if you need any tweaks. 👍

#3103

[Fyrd]

Now available at http://caniuse.com/#feat=css-rrggbbaa

[jhpratt]

@Fyrd Just an FYI it's currently a working draft, not unofficial.

(https://www.w3.org/TR/css-color-4/#hex-notation)

[GammaGames]

Why not add #rgb or #rgba as well? Everything from @Mottie's comment, really

[lozandier]

Shouldn't lch, lab & color() also be added?