ΔE 12.9, fair: the same colour family, but not a straight swap. Drab Brown is much more muted, warmer than Rootpath.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Drab Brown is much more muted, warmer than Rootpath.
The same difference applies the other way round: Rootpath is much 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 Rootpath on the colour wheel See Drab Brown on the colour wheel
All matches: Rootpath equivalents · Drab Brown equivalents