ΔE 11.3, fair: the same colour family, but not a straight swap. Base Flesh is a little darker, warmer than Sandstorm.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Base Flesh is a little darker, warmer than Sandstorm.
The same difference applies the other way round: Sandstorm is a little lighter, 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 Sandstorm on the colour wheel See Base Flesh on the colour wheel
All matches: Sandstorm equivalents · Base Flesh equivalents