Field Grey vs Exile Green

How close are they?

ΔE 6.8, close: similar, with a visible difference side by side. Exile Green is more saturated, cooler than Field Grey.

Can I use Exile Green instead of Field Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Exile Green is more saturated, cooler than Field Grey.

Can I use Field Grey instead of Exile Green?

The same difference applies the other way round: Field Grey is more muted, 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.