Russian Dark Brown 6K vs Cam. Middle Brown

How close are they?

ΔE 6.0, close: similar, with a visible difference side by side. Cam. Middle Brown is a little lighter, warmer than Russian Dark Brown 6K.

Can I use Cam. Middle Brown instead of Russian Dark Brown 6K?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Cam. Middle Brown is a little lighter, warmer than Russian Dark Brown 6K.

Can I use Russian Dark Brown 6K instead of Cam. Middle Brown?

The same difference applies the other way round: Russian Dark Brown 6K is a little darker, 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.