Hi guys, hope this is the right section to post this. I need to ask about colours modes and converting to cmyk from rgb. Ive used this online tool, rgb2cmyk but the colours dont match the ones Ive done with photoshop back when I still had it. Can I convert the old ones to rgb and back to cmyk with that online tool or is that doing to affect the quality?

sorry if this is a bit confusing, hope you understand what i meaa