Bone Brown vs Paratrooper Tan

How close are they?

ΔE 9.3, close: similar, with a visible difference side by side. Paratrooper Tan is a little lighter, more muted than Bone Brown.

Can I use Paratrooper Tan instead of Bone Brown?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Paratrooper Tan is a little lighter, more muted than Bone Brown.

Can I use Bone Brown instead of Paratrooper Tan?

The same difference applies the other way round: Bone Brown is a little darker, more saturated.

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.