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Re: [css-gcpm][css-color] device-cmyk() interaction with RGB-space colors.

From: Simon Sapin <simon.sapin@exyr.org>
Date: Thu, 12 Sep 2013 21:54:07 +0200
Message-ID: <52321BDF.6080306@exyr.org>
To: Rik Cabanier <cabanier@gmail.com>
CC: www-style list <www-style@w3.org>
Le 12/09/2013 21:27, Rik Cabanier a écrit :
> Drawing (= rasterization + compositing + blending + filters) should be
> done in the colorspace of the output device.
> In this case, if you have an element that uses CMYK colors, those colors
> should be converted to RGB and then you interpolate them.

Do you mean to RGB on screen and to CMYK for priting?

> There should be a standard CMYK profile for this conversion and there
> should probably be a way to change this profile (so you can specify SWOP
> or EuroScale).

Maybe, but that’s different from the feature specified in GCPM (and that 
we just decided to move into Color) which does *device* CMYK, where the 
profile is intentionally unspecified.

> Rendering in the output device color space does imply that printing and
> display will look different. Maybe there's also a need to specify the
> colorspace of the document.

Simon Sapin
Received on Thursday, 12 September 2013 19:54:32 UTC

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