ΔE 11.9, fair: the same colour family, but not a straight swap. Stormvermin Fur is a little lighter, more muted, warmer than Olive Drab Base.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Stormvermin Fur is a little lighter, more muted, warmer than Olive Drab Base.
The same difference applies the other way round: Olive Drab Base is a little darker, more saturated, 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 Olive Drab Base on the colour wheel See Stormvermin Fur on the colour wheel
All matches: Olive Drab Base equivalents · Stormvermin Fur equivalents