ΔE 11.7, fair: the same colour family, but not a straight swap. Zombie Skin is a little darker, cooler than Plaguebearer Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Zombie Skin is a little darker, cooler than Plaguebearer Flesh.
The same difference applies the other way round: Plaguebearer Flesh is a little lighter, 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 Plaguebearer Flesh on the colour wheel See Zombie Skin on the colour wheel
All matches: Plaguebearer Flesh equivalents · Zombie Skin equivalents