ΔE 13.7, fair: the same colour family, but not a straight swap. Dechala Lilac is a little lighter, more muted, cooler than Matt Pink. They are different kinds of paint: AMMO by Mig Matt Pink 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.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Dechala Lilac is a little lighter, more muted, cooler than Matt Pink. They are different kinds of paint.
The same difference applies the other way round: Matt Pink is a little darker, more saturated, 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 Matt Pink on the colour wheel See Dechala Lilac on the colour wheel
All matches: Matt Pink equivalents · Dechala Lilac equivalents