ΔE 18.6, loose: different enough that you should pick on purpose. Red Flesh is noticeably darker, cooler than Rosy Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Red Flesh is noticeably darker, cooler than Rosy Skin.
The same difference applies the other way round: Rosy 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 Rosy Skin on the colour wheel See Red Flesh on the colour wheel
All matches: Rosy Skin equivalents · Red Flesh equivalents