Ash Black vs Uniform Grey

How close are they?

ΔE 8.7, close: similar, with a visible difference side by side. Uniform Grey is a little lighter than Ash Black. They are different kinds of paint: AMMO by Mig Ash Black is an ink, glaze or transparent paint and Army Painter Uniform Grey is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.

Can I use Uniform Grey instead of Ash Black?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Uniform Grey is a little lighter than Ash Black. They are different kinds of paint.

Can I use Ash Black instead of Uniform Grey?

The same difference applies the other way round: Ash Black is a little darker.

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.