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