ΔE 13.5, fair: the same colour family, but not a straight swap. Park Green Flat is noticeably lighter, more muted, cooler than Dark Evergreen.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Park Green Flat is noticeably lighter, more muted, cooler than Dark Evergreen.
The same difference applies the other way round: Dark Evergreen is noticeably darker, 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 Dark Evergreen on the colour wheel See Park Green Flat on the colour wheel
All matches: Dark Evergreen equivalents · Park Green Flat equivalents