ΔE 11.8, fair: the same colour family, but not a straight swap. Moonstone Skin is a little darker, more muted, cooler than Dwarf Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Moonstone Skin is a little darker, more muted, cooler than Dwarf Skin.
The same difference applies the other way round: Dwarf Skin is a little lighter, 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 Dwarf Skin on the colour wheel See Moonstone Skin on the colour wheel
All matches: Dwarf Skin equivalents · Moonstone Skin equivalents