ΔE 11.5, fair: the same colour family, but not a straight swap. Scarlet Blood is a little darker, more saturated than Salmon Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Scarlet Blood is a little darker, more saturated than Salmon Skin.
The same difference applies the other way round: Salmon Skin is a little lighter, more muted.
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 Skin on the colour wheel See Scarlet Blood on the colour wheel
All matches: Salmon Skin equivalents · Scarlet Blood equivalents