ΔE 15.4, loose: different enough that you should pick on purpose. Pale Flesh is a little darker, much more muted, warmer than Fair Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Pale Flesh is a little darker, much more muted, warmer than Fair Skin.
The same difference applies the other way round: Fair Skin is a little lighter, much more saturated, 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.
See Fair Skin on the colour wheel See Pale Flesh on the colour wheel
All matches: Fair Skin equivalents · Pale Flesh equivalents