Olive Green vs Witch Brew

How close are they?

ΔE 9.0, close: similar, with a visible difference side by side. Witch Brew is a little darker, cooler than Olive Green.

Can I use Witch Brew instead of Olive Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Witch Brew is a little darker, cooler than Olive Green.

Can I use Olive Green instead of Witch Brew?

The same difference applies the other way round: Olive Green 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.