ΔE 13.2, fair: the same colour family, but not a straight swap. Park Green Flat is much more saturated, cooler than Space Dark Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Park Green Flat is much more saturated, cooler than Space Dark Green.
The same difference applies the other way round: Space Dark Green is much 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 Space Dark Green on the colour wheel See Park Green Flat on the colour wheel
All matches: Space Dark Green equivalents · Park Green Flat equivalents