ΔE 15.4, loose: different enough that you should pick on purpose. Vulkan Green is noticeably darker, more saturated than Exile Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Vulkan Green is noticeably darker, more saturated than Exile Green.
The same difference applies the other way round: Exile Green is noticeably lighter, more muted.
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 Vulkan Green on the colour wheel
All matches: Exile Green equivalents · Vulkan Green equivalents