ΔE 11.6, fair: the same colour family, but not a straight swap. Dark Green is a little darker, warmer than Emerald Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Dark Green is a little darker, warmer than Emerald Green.
The same difference applies the other way round: Emerald 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 Emerald Green on the colour wheel See Dark Green on the colour wheel
All matches: Emerald Green equivalents · Dark Green equivalents