Colour picker storage with rgb cmyk hex

Somewhere I’ve seen a post about a colour picker palette, which is about $10 a year subs.
Ideally I’d like it to be able to deal with cmyk or rbg and convert to hex. Any one know ?
Also I had ColorSchemer that offered schemes with the colour codes but its no longer available.
Is anyone using a good colour schemer they can recommend?
I looked a Platton but no hex conversion, as far as I could see.

Thank s

You are probably thinking about SIP -

I have an App called Color Picker (by Patrik Tomas Chamelo, that I think will do what you want.

thx yes that’s the one I mentioned

ill look at that now , thank you