ΔE 10.8, fair: the same colour family, but not a straight swap. Mage Hunter Green is a little lighter, cooler than Medium Drab.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Mage Hunter Green is a little lighter, cooler than Medium Drab.
The same difference applies the other way round: Medium Drab 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 Medium Drab on the colour wheel See Mage Hunter Green on the colour wheel
All matches: Medium Drab equivalents · Mage Hunter Green equivalents