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