Russian Uniform Base vs Army Green

How close are they?

ΔE 7.3, close: similar, with a visible difference side by side. Army Green is more muted, cooler than Russian Uniform Base.

Can I use Army Green instead of Russian Uniform Base?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Army Green is more muted, cooler than Russian Uniform Base.

Can I use Russian Uniform Base instead of Army Green?

The same difference applies the other way round: Russian Uniform Base 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.