ΔE 10.5, fair: the same colour family, but not a straight swap. Interior Grey Green is a little lighter, cooler than Ghoul Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Interior Grey Green is a little lighter, cooler than Ghoul Skin.
The same difference applies the other way round: Ghoul Skin is a little darker, 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 Ghoul Skin on the colour wheel See Interior Grey Green on the colour wheel
All matches: Ghoul Skin equivalents · Interior Grey Green equivalents