ΔE 7.2, close: similar, with a visible difference side by side. Olive Drab 2 is more muted, cooler than Mid DAK Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Olive Drab 2 is more muted, cooler than Mid DAK Green.
The same difference applies the other way round: Mid DAK Green is 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 Mid DAK Green on the colour wheel See Olive Drab 2 on the colour wheel
All matches: Mid DAK Green equivalents · Olive Drab 2 equivalents