ΔE 8.1, close: similar, with a visible difference side by side. Medium Magenta is cooler than Impish Rouge.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Medium Magenta is cooler than Impish Rouge.
The same difference applies the other way round: Impish Rouge is 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 Impish Rouge on the colour wheel See Medium Magenta on the colour wheel
All matches: Impish Rouge equivalents · Medium Magenta equivalents