ΔE 9.4, close: similar, with a visible difference side by side. Imperial Purple is more saturated than Kakophoni Purple.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Imperial Purple is more saturated than Kakophoni Purple.
The same difference applies the other way round: Kakophoni Purple is 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 Kakophoni Purple on the colour wheel See Imperial Purple on the colour wheel
All matches: Kakophoni Purple equivalents · Imperial Purple equivalents