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Re: [css3-transitions] colour space used for colour interpolations

From: Rik Cabanier <cabanier@gmail.com>
Date: Sun, 20 May 2012 21:26:06 +0300
Message-ID: <CAGN7qDCNMv=-d69KnPWBU0un9uFtj-pjZWiLhczX1Y7RQVetwg@mail.gmail.com>
To: Cameron McCormack <cam@mcc.id.au>
Cc: "www-style@w3.org" <www-style@w3.org>
On Fri, May 18, 2012 at 3:43 AM, Cameron McCormack <cam@mcc.id.au> wrote:

> In SVG, the color-interpolation property is used to control the colour
> space in which SVG animations on properties like fill, stroke and
> stop-color are performed.  Should this apply to CSS Transitions and
> Animations on properties that take colours too?  It'd be good to have the
> same interpolations available in both kinds of animation.
> (Brian mentioned to me that people also want to be able to interpolate in
> other colour spaces, like HSL or L*a*b too -- we could extend
> color-interpolation with options for that.)
I'm not sure if it makes sense to have interpolation in HSL. It seems that
it introduces more complexities than needed. Authors probably feel that it
should interpolate like RGB since it's just a different representation and
not really a new colorspace.
Lab would be nice to have since it will interpolate in a visually pleasing
way. The conversion from Lab to RGB will also work around the problem where
the sRGB response curve makes intermediate values looks too dark/muddy.

If we can make Lab a first class citizen, there is no more need to
color-interpolation so it's better to not go through the trouble of
speccing and implementing it.
At some point, we should look into better color management in the browser.
color-interpolation and color-interpolation-filters are rooted in the world
of monitors. Modern devices can display more colors than sRGB so we should
find a way to expose that.

Received on Sunday, 20 May 2012 18:26:35 UTC

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