ΔE 17.4, loose: different enough that you should pick on purpose. Grey Green is a little lighter, much more muted, warmer than Exile Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Grey Green is a little lighter, much more muted, warmer than Exile Green.
The same difference applies the other way round: Exile Green is a little darker, much more saturated, 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.
See Exile Green on the colour wheel See Grey Green on the colour wheel
All matches: Exile Green equivalents · Grey Green equivalents