ΔE 13.3, fair: the same colour family, but not a straight swap. Lupercal Green is more saturated, cooler than Elf Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Lupercal Green is more saturated, cooler than Elf Green.
The same difference applies the other way round: Elf Green 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.
See Elf Green on the colour wheel See Lupercal Green on the colour wheel
All matches: Elf Green equivalents · Lupercal Green equivalents