Alas, my monitor's colour profile is already sRGB iec61966-2.1. so no luck there - thanks for the reply though
Thanks for the reply my dude
So if I understand correctly, this is just inevitable because most photo viewers are not colour managed and will boost saturation?
I tried comparing photos from affinity photo vs flickr vs windows, and images uploaded to flickr matched the colours in affinity a whole lot better than windows photo viewer, so I'm happy since the end viewer should see it mostly correctly. I think I'm happy enough with it now knowing it's just windows photo viewer.