ΔE 15.5, loose: different enough that you should pick on purpose. Warm Grey is a little lighter, much more muted, cooler than Rosy Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Warm Grey is a little lighter, much more muted, cooler than Rosy Skin.
The same difference applies the other way round: Rosy Skin is a little darker, much more saturated, 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 Warm Grey on the colour wheel
All matches: Rosy Skin equivalents · Warm Grey equivalents