ΔE 12.1, fair: the same colour family, but not a straight swap. Dead Flesh is more saturated, cooler than Naples Yellow Hue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Dead Flesh is more saturated, cooler than Naples Yellow Hue.
The same difference applies the other way round: Naples Yellow Hue is 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 Naples Yellow Hue on the colour wheel See Dead Flesh on the colour wheel
All matches: Naples Yellow Hue equivalents · Dead Flesh equivalents