Dark Soviet Khaki vs Woodstain Brown

How close are they?

ΔE 6.5, close: similar, with a visible difference side by side. Woodstain Brown is warmer than Dark Soviet Khaki.

Can I use Woodstain Brown instead of Dark Soviet Khaki?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Woodstain Brown is warmer than Dark Soviet Khaki.

Can I use Dark Soviet Khaki instead of Woodstain Brown?

The same difference applies the other way round: Dark Soviet Khaki is 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.