Faded Plum vs Cold Flesh

How close are they?

ΔE 20.3, loose: different enough that you should pick on purpose. Cold Flesh is a little darker, much more muted than Faded Plum.

Can I use Cold Flesh instead of Faded Plum?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Cold Flesh is a little darker, much more muted than Faded Plum.

Can I use Faded Plum instead of Cold Flesh?

The same difference applies the other way round: Faded Plum is a little lighter, much more saturated.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.