ΔE 10.5, fair: the same colour family, but not a straight swap. Skin Tone is more muted, cooler than Flat Flesh 2.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Skin Tone is more muted, cooler than Flat Flesh 2.
The same difference applies the other way round: Flat Flesh 2 is 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 Flat Flesh 2 on the colour wheel See Skin Tone on the colour wheel
All matches: Flat Flesh 2 equivalents · Skin Tone equivalents