ΔE 6.5, close: similar, with a visible difference side by side. Gung-Ho Green is a little darker, warmer than Dark DAK Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Gung-Ho Green is a little darker, warmer than Dark DAK Green.
The same difference applies the other way round: Dark DAK Green is a little lighter, 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 Dark DAK Green on the colour wheel See Gung-Ho Green on the colour wheel
All matches: Dark DAK Green equivalents · Gung-Ho Green equivalents