Dark Battle Dress vs Overlord Olive

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. Overlord Olive is a little darker, cooler than Dark Battle Dress.

Can I use Overlord Olive instead of Dark Battle Dress?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Overlord Olive is a little darker, cooler than Dark Battle Dress.

Can I use Dark Battle Dress instead of Overlord Olive?

The same difference applies the other way round: Dark Battle Dress is a little lighter, 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.