ΔE 10.6, fair: the same colour family, but not a straight swap. Elf Skin Tone is a little darker than Caucasian Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Elf Skin Tone is a little darker than Caucasian Skin.
The same difference applies the other way round: Caucasian Skin is a little lighter.
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 Caucasian Skin on the colour wheel See Elf Skin Tone on the colour wheel
All matches: Caucasian Skin equivalents · Elf Skin Tone equivalents