ΔE 22.3, loose: different enough that you should pick on purpose. Elven Green is much more muted, cooler than Jungle Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Elven Green is much more muted, cooler than Jungle Green.
The same difference applies the other way round: Jungle Green is much more saturated, 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.
See Jungle Green on the colour wheel See Elven Green on the colour wheel
All matches: Jungle Green equivalents · Elven Green equivalents