ΔE 22.1, loose: different enough that you should pick on purpose. Fairy Skin is noticeably lighter, cooler than Endurance Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Fairy Skin is noticeably lighter, cooler than Endurance Brown.
The same difference applies the other way round: Endurance Brown is noticeably darker, 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 Endurance Brown on the colour wheel See Fairy Skin on the colour wheel
All matches: Endurance Brown equivalents · Fairy Skin equivalents