ΔE 13.7, fair: the same colour family, but not a straight swap. Reddish Flesh is a little darker, more muted, cooler than British Desert Pink ZI.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Reddish Flesh is a little darker, more muted, cooler than British Desert Pink ZI.
The same difference applies the other way round: British Desert Pink ZI is a little lighter, 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 British Desert Pink ZI on the colour wheel See Reddish Flesh on the colour wheel
All matches: British Desert Pink ZI equivalents · Reddish Flesh equivalents