ΔE 10.1, fair: the same colour family, but not a straight swap. Brown Wash is a little darker, more muted than Mid Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Brown Wash is a little darker, more muted than Mid Brown.
The same difference applies the other way round: Mid Brown 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 Mid Brown on the colour wheel See Brown Wash on the colour wheel
All matches: Mid Brown equivalents · Brown Wash equivalents