ΔE 4.3, very close: most people won’t see a difference side by side. Astrogranite is a little darker than Neutral Gray. They are different kinds of paint: AMMO by Mig Neutral Gray is an opaque base/layer paint and Citadel Astrogranite is a technical paint or medium, 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). Astrogranite is a little darker than Neutral Gray. They are different kinds of paint.
The same difference applies the other way round: Neutral Gray is a little lighter.
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 Neutral Gray on the colour wheel See Astrogranite on the colour wheel
All matches: Neutral Gray equivalents · Astrogranite equivalents