ΔE 5.7, very close: most people won’t see a difference side by side. Spiritstone Red is more saturated than Red. They are different kinds of paint: AMMO by Mig Red is an opaque base/layer paint and Citadel Spiritstone Red 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 6). Spiritstone Red is more saturated than Red. They are different kinds of paint.
The same difference applies the other way round: Red 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 Red on the colour wheel See Spiritstone Red on the colour wheel
All matches: Red equivalents · Spiritstone Red equivalents