Dust Bowl vs Beige Brown

How close are they?

ΔE 6.8, close: similar, with a visible difference side by side. Beige Brown is a little darker, more saturated than Dust Bowl.

Can I use Beige Brown instead of Dust Bowl?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Beige Brown is a little darker, more saturated than Dust Bowl.

Can I use Dust Bowl instead of Beige Brown?

The same difference applies the other way round: Dust Bowl is a little lighter, more muted.

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.