ΔE 14.2, fair: the same colour family, but not a straight swap. Rosy Skin is noticeably darker, cooler than Ruby Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Rosy Skin is noticeably darker, cooler than Ruby Skin.
The same difference applies the other way round: Ruby Skin is noticeably lighter, 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 Ruby Skin on the colour wheel See Rosy Skin on the colour wheel
All matches: Ruby Skin equivalents · Rosy Skin equivalents