03-10-2022, 08:53 PM
Do not be surprised at differences between applications. If you search you can find reports of differences between PS and inDesign and they come from the same company.
I do not have CorelDraw so this is using Krita in CMYK mode: https://i.imgur.com/b79XRA7.jpg Pantone are spot colours I make 186C this https://mypantone.info/186C.html
Exporting as a tif and opening in Gimp I get this: https://i.imgur.com/yzuZJ21.jpg and it is not that far away from values used in Krita. Values showed using sample points.
Using a plugin (Cyan) I can import the tif file and assign a RGB profile. https://i.imgur.com/Sii4sDh.jpg Not surprisingly the values are different. Colour profile does have an effect. https://i.imgur.com/imbTpD5.jpg
Even worse, If I soft proof that, your colours are out-of-gamut
https://i.imgur.com/PShm7yV.jpg
but then that all depends on the profile used for soft proofing and Gimp is not very accurate, it is after all a RGB editor.
It is a good question, truthfully I do not know how the internal RGB - CMYK conversion is made, you could ask the question over on https://discuss.pixls.us/ where there are people more into printing.
I do not have CorelDraw so this is using Krita in CMYK mode: https://i.imgur.com/b79XRA7.jpg Pantone are spot colours I make 186C this https://mypantone.info/186C.html
Exporting as a tif and opening in Gimp I get this: https://i.imgur.com/yzuZJ21.jpg and it is not that far away from values used in Krita. Values showed using sample points.
Using a plugin (Cyan) I can import the tif file and assign a RGB profile. https://i.imgur.com/Sii4sDh.jpg Not surprisingly the values are different. Colour profile does have an effect. https://i.imgur.com/imbTpD5.jpg
Even worse, If I soft proof that, your colours are out-of-gamut
https://i.imgur.com/PShm7yV.jpg but then that all depends on the profile used for soft proofing and Gimp is not very accurate, it is after all a RGB editor.
It is a good question, truthfully I do not know how the internal RGB - CMYK conversion is made, you could ask the question over on https://discuss.pixls.us/ where there are people more into printing.