Olive Green vs Light Drab

How close are they?

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

Can I use Light Drab instead of Olive Green?

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

Can I use Olive Green instead of Light Drab?

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.