ΔE 13.0, fair: the same colour family, but not a straight swap. Phoenix Egg is noticeably lighter, more muted than Plaguebearer Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Phoenix Egg is noticeably lighter, more muted than Plaguebearer Flesh.
The same difference applies the other way round: Plaguebearer Flesh is noticeably darker, more saturated.
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 Phoenix Egg on the colour wheel
All matches: Plaguebearer Flesh equivalents · Phoenix Egg equivalents