Using CMYK colours in WPF/XAML

Question

Is there any way to specify CMYK colours directly in a XAML document?

prefixing them with # character will create RGB colours, but how to specify a

Answer 1

OK! I found the answer:

The way that WPF uses colour models is by System.Windows.Media.Color's static constructor FromValues() and introducing a colour profile:

The following code, for example:

var c = Color.FromValues(
               new float[] {1.0f,0.0f,0.0f,0.0f } , 
               new Uri("file://C:/ICCProfile.icc",  UriKind.Absolute));

creates a 100% Cyan colour.

Profiles can be downloaded from http://www.eci.org/doku.php?id=en:start

I tested this solution with XpsDocumentWriter and I confirm that it creates the correct CMYK colour code.

For XAML it is just the matter of building an IValueConverter that converts something like "~C,M,Y,K" (as #RRGGBB for RGB) to a real CMYK colour.

Answer 2

OK again! It turned out to be much more easier than what I though: CMYK is directly usable in XAML:

<Grid Background="ContextColor file://C:/WINDOWS/system32/spool/drivers/color/EuroscaleCoated.icc 1.0,0.0,0.0,1.0,1.0">