Scarab Green vs J.A. Green

How close are they?

ΔE 9.4, close: similar, with a visible difference side by side. J.A. Green is a little lighter, warmer than Scarab Green.

Can I use J.A. Green instead of Scarab Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). J.A. Green is a little lighter, warmer than Scarab Green.

Can I use Scarab Green instead of J.A. Green?

The same difference applies the other way round: Scarab Green is a little darker, cooler.

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.