Blue Gray vs Nighthaunt Gloom

How close are they?

ΔE 7.8, close: similar, with a visible difference side by side. Nighthaunt Gloom is more saturated, warmer than Blue Gray. They are different kinds of paint: AMMO by Mig Blue Gray is an opaque base/layer paint and Citadel Nighthaunt Gloom is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.

Can I use Nighthaunt Gloom instead of Blue Gray?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Nighthaunt Gloom is more saturated, warmer than Blue Gray. They are different kinds of paint.

Can I use Blue Gray instead of Nighthaunt Gloom?

The same difference applies the other way round: Blue Gray is more muted, cooler.

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.