ΔE 9.5, close: similar, with a visible difference side by side. Pink is a little lighter, more saturated than Impish Rouge.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Pink is a little lighter, more saturated than Impish Rouge.
The same difference applies the other way round: Impish Rouge is a little darker, 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 Impish Rouge on the colour wheel See Pink on the colour wheel
All matches: Impish Rouge equivalents · Pink equivalents