ΔE 12.6, fair: the same colour family, but not a straight swap. Advanced Flesh Tone is a little darker, more saturated, cooler than Deepkin Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Advanced Flesh Tone is a little darker, more saturated, cooler than Deepkin Flesh.
The same difference applies the other way round: Deepkin Flesh 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 Deepkin Flesh on the colour wheel See Advanced Flesh Tone on the colour wheel
All matches: Deepkin Flesh equivalents · Advanced Flesh Tone equivalents