ΔE 4.2, very close: most people won’t see a difference side by side. Light Battle Dress is cooler than Matt Grime. They are different kinds of paint: AMMO by Mig Matt Grime is an ink, glaze or transparent paint and Army Painter Light Battle Dress is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 4). Light Battle Dress is cooler than Matt Grime. They are different kinds of paint.
The same difference applies the other way round: Matt Grime 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 Matt Grime on the colour wheel See Light Battle Dress on the colour wheel
All matches: Matt Grime equivalents · Light Battle Dress equivalents