Pale Skin vs Off-White

How close are they?

ΔE 15.8, loose: different enough that you should pick on purpose. Off-White is noticeably lighter, more muted, cooler than Pale Skin.

Can I use Off-White instead of Pale Skin?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Off-White is noticeably lighter, more muted, cooler than Pale Skin.

Can I use Pale Skin instead of Off-White?

The same difference applies the other way round: Pale Skin is noticeably darker, more saturated, warmer.

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.