ΔE 11.8, fair: the same colour family, but not a straight swap. Legion Green is a little darker, more muted, warmer than Dewpath.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Legion Green is a little darker, more muted, warmer than Dewpath.
The same difference applies the other way round: Dewpath is a little lighter, more saturated, 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 Dewpath on the colour wheel See Legion Green on the colour wheel
All matches: Dewpath equivalents · Legion Green equivalents