Are there any tools or software which can be used in elementary ? If so, do they support CYMK format other than RGB ?
I use Krita. It's a digital painting and illustration application. Krita offers CMYK support, HDR painting, perspective grids, dockers, filters, painting assistants, and many other features.
To install krita.
sudo add-apt-repository ppa:kubuntu-ppa/backports sudo apt-get update sudo apt-get install krita
GIMP is a well known image manipulation program and a popular alternative to Photoshop. Although it doesn't have built-in CMYK support, the Separate+ plugin can allow you to convert from RGB to CMYK.
apt-get install gimp
This is not a complete solution though:
CMYK data is interpreted and processed only within separate plug-in. From a GIMP's viewpoint, it is not recognized that CMYK data is processed.
Hence your mileage may vary.
GIMP, Krita and Inkscape are not made specifically for elementary OS or created with the HIG of elementary OS in mind, but they will get the job done.
elementary OS has it's own photo manager called
pantheon-photos which allows for basic picture manipulation tasks.
I use Inkscape.
It support CYMK, RGB and HSL.
It's a vector graphics editor, so may not be what you want. Install with this:
sudo apt-get install inkscape
or search the Software Center.
Darktable, install in a terminal window:
sudo apt-get install debhelper dpkg-dev fakeroot sudo apt-get build-dep darktable tar zxvf darktable_$VERSION.orig.tar.gz // in $VERSION it goes the correspndant version cd darktable-$VERSION tar zxvf ../darktable_$VERSION.debian.tar.gz dpkg-buildpackage -rfakeroot