Purple Flesh vs Fairy Pink

How close are they?

ΔE 19.3, loose: different enough that you should pick on purpose. Fairy Pink is a little darker, much more saturated, warmer than Purple Flesh.

Can I use Fairy Pink instead of Purple Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Fairy Pink is a little darker, much more saturated, warmer than Purple Flesh.

Can I use Purple Flesh instead of Fairy Pink?

The same difference applies the other way round: Purple Flesh is a little lighter, much more muted, cooler.

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.