ΔE 12.4, fair: the same colour family, but not a straight swap. Dark Green RLM71 is a little lighter, more saturated than Dryad Bark.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Dark Green RLM71 is a little lighter, more saturated than Dryad Bark.
The same difference applies the other way round: Dryad Bark is a little darker, 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 Dryad Bark on the colour wheel See Dark Green RLM71 on the colour wheel
All matches: Dryad Bark equivalents · Dark Green RLM71 equivalents