ΔE 12.6, fair: the same colour family, but not a straight swap. Demon Brown is more saturated, cooler than Satchel Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Demon Brown is more saturated, cooler than Satchel Brown.
The same difference applies the other way round: Satchel Brown is more muted, 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 Satchel Brown on the colour wheel See Demon Brown on the colour wheel
All matches: Satchel Brown equivalents · Demon Brown equivalents