ΔE 10.9, fair: the same colour family, but not a straight swap. Gung-Ho Green is a little darker, warmer than Elf Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Gung-Ho Green is a little darker, warmer than Elf Green.
The same difference applies the other way round: Elf Green is a little lighter, 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 Elf Green on the colour wheel See Gung-Ho Green on the colour wheel
All matches: Elf Green equivalents · Gung-Ho Green equivalents