ΔE 14.6, fair: the same colour family, but not a straight swap. Dark Flesh Tone is a little lighter, much more muted than Sanguine Scarlet.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Dark Flesh Tone is a little lighter, much more muted than Sanguine Scarlet.
The same difference applies the other way round: Sanguine Scarlet is a little darker, much 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 Sanguine Scarlet on the colour wheel See Dark Flesh Tone on the colour wheel
All matches: Sanguine Scarlet equivalents · Dark Flesh Tone equivalents