ΔE 10.3, fair: the same colour family, but not a straight swap. Flayed One Flesh is a little lighter, more muted, warmer than French Army Desert Sand.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Flayed One Flesh is a little lighter, more muted, warmer than French Army Desert Sand.
The same difference applies the other way round: French Army Desert Sand is a little darker, more saturated, cooler.
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 French Army Desert Sand on the colour wheel See Flayed One Flesh on the colour wheel
All matches: French Army Desert Sand equivalents · Flayed One Flesh equivalents