ΔE 13.4, fair: the same colour family, but not a straight swap. Dryad Bark is a little darker, much more muted than RAL 6003 Olivgrün opt.2.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Dryad Bark is a little darker, much more muted than RAL 6003 Olivgrün opt.2.
The same difference applies the other way round: RAL 6003 Olivgrün opt.2 is a little lighter, much 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 6003 Olivgrün opt.2 on the colour wheel See Dryad Bark on the colour wheel
All matches: RAL 6003 Olivgrün opt.2 equivalents · Dryad Bark equivalents