ΔE 15.4, loose: different enough that you should pick on purpose. Mahogany is a little darker, much more muted, cooler than Satchel Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Mahogany is a little darker, much more muted, cooler than Satchel Brown.
The same difference applies the other way round: Satchel Brown is a little lighter, much more saturated, 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 Mahogany on the colour wheel
All matches: Satchel Brown equivalents · Mahogany equivalents