ΔE 12.5, fair: the same colour family, but not a straight swap. Rosy Flesh is a little darker, more saturated, warmer than Salmon.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Rosy Flesh is a little darker, more saturated, warmer than Salmon.
The same difference applies the other way round: Salmon is a little lighter, more muted, cooler.
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 Salmon on the colour wheel See Rosy Flesh on the colour wheel
All matches: Salmon equivalents · Rosy Flesh equivalents