ΔE 21.3, loose: different enough that you should pick on purpose. Vampire Fang is noticeably darker, more saturated, cooler than Pearl Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Vampire Fang is noticeably darker, more saturated, cooler than Pearl Skin.
The same difference applies the other way round: Pearl Skin is noticeably lighter, more muted, 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.
See Pearl Skin on the colour wheel See Vampire Fang on the colour wheel
All matches: Pearl Skin equivalents · Vampire Fang equivalents