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

> On Sep 26, 2013, at 4:35 AM, Henrik Andersson <> wrote:
> Rik Cabanier skriver:
>> 5. How to handle content that has an RGB only operation (such as a
>> colormatrix filter) during export to CMYK
> Wouldn't that particular filter make just as much sense as per channel
> blend modes? After all, it is a per channel operation. Kinda.
> It would obviously need a dedicated configuration for other color
> spaces, but the operation itself should make sense.
> Question is, has anyone actually tried using a color matrix on anything
> besides RGB? Not counting shenanigans to setup the matrix to convert to
> rgb before the main effect...

I don't know much about the colormatrix filter, but for something like 'opacity', I don't see how you wouldn't convert cmyk to rgb before mixing channels. One is subtractive color and the other is additive.

Received on Thursday, 26 September 2013 14:47:56 UTC