Exile Green vs Dark Green 2

How close are they?

ΔE 6.7, close: similar, with a visible difference side by side. Dark Green 2 is a little lighter, warmer than Exile Green.

Can I use Dark Green 2 instead of Exile Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Dark Green 2 is a little lighter, warmer than Exile Green.

Can I use Exile Green instead of Dark Green 2?

The same difference applies the other way round: Exile 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.