ΔE 11.0, fair: the same colour family, but not a straight swap. Brown Green is a little lighter, cooler than Bosh Chestnut.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Brown Green is a little lighter, cooler than Bosh Chestnut.
The same difference applies the other way round: Bosh Chestnut is a little darker, warmer.
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 Bosh Chestnut on the colour wheel See Brown Green on the colour wheel
All matches: Bosh Chestnut equivalents · Brown Green equivalents