ΔE 10.2, fair: the same colour family, but not a straight swap. Reddish Flesh is a little lighter, more saturated, cooler than Brown Rose.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Reddish Flesh is a little lighter, more saturated, cooler than Brown Rose.
The same difference applies the other way round: Brown Rose is a little darker, 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 Brown Rose on the colour wheel See Reddish Flesh on the colour wheel
All matches: Brown Rose equivalents · Reddish Flesh equivalents