Dark Battle Dress vs Olive-Brown Ops

How close are they?

ΔE 9.1, close: similar, with a visible difference side by side. Olive-Brown Ops is a little darker, more saturated than Dark Battle Dress.

Can I use Olive-Brown Ops instead of Dark Battle Dress?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Olive-Brown Ops is a little darker, more saturated than Dark Battle Dress.

Can I use Dark Battle Dress instead of Olive-Brown Ops?

The same difference applies the other way round: Dark Battle Dress 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.