ΔE 12.1, fair: the same colour family, but not a straight swap. Light Sand is a little darker, more saturated, cooler than Elven Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Light Sand is a little darker, more saturated, cooler than Elven Flesh.
The same difference applies the other way round: Elven Flesh is a little 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 Elven Flesh on the colour wheel See Light Sand on the colour wheel
All matches: Elven Flesh equivalents · Light Sand equivalents