ΔE 7.9, close: similar, with a visible difference side by side. Dark Yellow Green is a little darker, cooler than Mid Soviet Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dark Yellow Green is a little darker, cooler than Mid Soviet Khaki.
The same difference applies the other way round: Mid Soviet Khaki is a little lighter, 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 Soviet Khaki on the colour wheel See Dark Yellow Green on the colour wheel
All matches: Mid Soviet Khaki equivalents · Dark Yellow Green equivalents