Tundra Taupe vs Bestial Green

How close are they?

ΔE 6.6, close: similar, with a visible difference side by side. Bestial Green is a little lighter, cooler than Tundra Taupe.

Can I use Bestial Green instead of Tundra Taupe?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Bestial Green is a little lighter, cooler than Tundra Taupe.

Can I use Tundra Taupe instead of Bestial Green?

The same difference applies the other way round: Tundra Taupe is a little darker, 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.