ΔE 6.2, close: similar, with a visible difference side by side. Rosy Flesh is a little darker than Pastel Pink.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Rosy Flesh is a little darker than Pastel Pink.
The same difference applies the other way round: Pastel Pink is a little lighter.
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 Pastel Pink on the colour wheel See Rosy Flesh on the colour wheel
All matches: Pastel Pink equivalents · Rosy Flesh equivalents