ΔE 10.8, fair: the same colour family, but not a straight swap. Purple Hex is a little darker, more saturated, cooler than Carnelian Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Purple Hex is a little darker, more saturated, cooler than Carnelian Skin.
The same difference applies the other way round: Carnelian Skin is a little lighter, 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 Carnelian Skin on the colour wheel See Purple Hex on the colour wheel
All matches: Carnelian Skin equivalents · Purple Hex equivalents