ΔE 9.9, close: similar, with a visible difference side by side. Magos Purple is a little darker, cooler than Violet. They are different kinds of paint: AMMO by Mig Violet is an ink, glaze or transparent paint and Citadel Magos Purple is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Magos Purple is a little darker, cooler than Violet. They are different kinds of paint.
The same difference applies the other way round: Violet is a little lighter, 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 Violet on the colour wheel See Magos Purple on the colour wheel
All matches: Violet equivalents · Magos Purple equivalents