ΔE 14.4, fair: the same colour family, but not a straight swap. Ratskin Flesh is a little lighter, more muted, cooler than Leather Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Ratskin Flesh is a little lighter, more muted, cooler than Leather Brown.
The same difference applies the other way round: Leather Brown is a little darker, 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 Leather Brown on the colour wheel See Ratskin Flesh on the colour wheel
All matches: Leather Brown equivalents · Ratskin Flesh equivalents