Intent to Ship: hwb() color notation

[Anders Hartvoll Ruud]

Contact emails

and...@chromium.org, on behalf of:

jan.k...@gmail.com

Explainer

None

Specification

https://drafts.csswg.org/css-color/#the-hwb-notation

Summary

HWB (short for Hue-Whiteness-Blackness) is another method of specifying sRGB colors, similar to HSL, but often even easier for humans to work with. It describes colors with a starting hue, then a degree of whiteness and blackness to mix into that base hue.

Example CSS declaration: color:hwb(194 0% 0%);

Since hwb() resolves to RGB, it's a relatively straightforward addition that doesn't add complexity or performance concerns.

CL: https://chromium-review.googlesource.com/c/chromium/src/+/3404291

Blink component

Blink>CSS

TAG review

Didn't file one.

Risks

Interoperability and Compatibility

Gecko: Shipped/Shipping (https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/96)

WebKit: Shipped/Shipping (https://webkit.org/blog/11989/new-webkit-features-in-safari-15/)

Web developers: No signals

Other signals:

Debuggability

Inspector support will be shipped at the same time.

Is this feature fully tested by web-platform-tests?

Yes:

https://wpt.fyi/results/css/css-color?label=master&label=experimental&aligned&q=hwb

Requires code in //chrome?

False

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1288883

Estimated milestones

No milestones specified

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5637256860663808

This intent message was generated by Chrome Platform Status.

[Joe Medley]

Anders,

Which version of Chrome do you hope to ship in?

Joe

Joe Medley | Technical Writer, Chrome DevRel | jme...@google.com | 816-678-7195

If an API's not documented it doesn't exist.

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[Eric Willigers]

non-owner lgtm for M101

[Mike Taylor]

LGTM1

(Super cool first contribution, Jan)

[Anders Hartvoll Ruud]

On Tue, Feb 8, 2022 at 8:20 PM Joe Medley <jme...@google.com> wrote:

Anders,

Which version of Chrome do you hope to ship in?

Oops, should have specified that initially. M100 is in a feature freeze, so M101 as suggested by Eric sounds good to me. (Chromestatus entry updated to reflect that).

[Yoav Weiss]

LGTM2

Great to see us catching up here!

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[Daniel Bratell]

LGTM3

/Daniel

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[Jan Keitel]

Thank you all, especially @Anders for guiding this through.