ΔE 12.4, fair: the same colour family, but not a straight swap. Natural Flesh is a little lighter, more saturated, cooler than Highlight Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Natural Flesh is a little lighter, more saturated, cooler than Highlight Flesh.
The same difference applies the other way round: Highlight Flesh 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 Highlight Flesh on the colour wheel See Natural Flesh on the colour wheel
All matches: Highlight Flesh equivalents · Natural Flesh equivalents