ΔE 6.8, close: similar, with a visible difference side by side. Dechala Lilac is more saturated than Matt Violet. They are different kinds of paint: AMMO by Mig Matt Violet is an ink, glaze or transparent paint and Citadel Dechala Lilac is an opaque base/layer 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 7). Dechala Lilac is more saturated than Matt Violet. They are different kinds of paint.
The same difference applies the other way round: Matt Violet 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 Matt Violet on the colour wheel See Dechala Lilac on the colour wheel
All matches: Matt Violet equivalents · Dechala Lilac equivalents