ΔE 25.8, loose: different enough that you should pick on purpose. Fairy Skin is noticeably darker, more muted, cooler than Drain Life.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Fairy Skin is noticeably darker, more muted, cooler than Drain Life.
The same difference applies the other way round: Drain Life is noticeably lighter, 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.
See Drain Life on the colour wheel See Fairy Skin on the colour wheel
All matches: Drain Life equivalents · Fairy Skin equivalents