Ocean Blue vs Scarab Green

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. Scarab Green is a little lighter, cooler than Ocean Blue.

Can I use Scarab Green instead of Ocean Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Scarab Green is a little lighter, cooler than Ocean Blue.

Can I use Ocean Blue instead of Scarab Green?

The same difference applies the other way round: Ocean Blue is a little darker, 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.