ΔE 11.0, fair: the same colour family, but not a straight swap. Dryad Bark is a little darker, more muted than RAL 7017 Dunkelbraun.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Dryad Bark is a little darker, more muted than RAL 7017 Dunkelbraun.
The same difference applies the other way round: RAL 7017 Dunkelbraun is a little lighter, more saturated.
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 RAL 7017 Dunkelbraun on the colour wheel See Dryad Bark on the colour wheel
All matches: RAL 7017 Dunkelbraun equivalents · Dryad Bark equivalents