ΔE 13.3, fair: the same colour family, but not a straight swap. Base Flesh is more saturated, warmer than Dark Yellow Sandy Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Base Flesh is more saturated, warmer than Dark Yellow Sandy Yellow.
The same difference applies the other way round: Dark Yellow Sandy Yellow is more muted, 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 Dark Yellow Sandy Yellow on the colour wheel See Base Flesh on the colour wheel
All matches: Dark Yellow Sandy Yellow equivalents · Base Flesh equivalents