ΔE 6.9, close: similar, with a visible difference side by side. Dreadful Visage is more saturated than Midgrey. They are different kinds of paint: AMMO by Mig Midgrey is an opaque base/layer paint and Citadel Dreadful Visage is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Dreadful Visage is more saturated than Midgrey. They are different kinds of paint.
The same difference applies the other way round: Midgrey 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 Midgrey on the colour wheel See Dreadful Visage on the colour wheel
All matches: Midgrey equivalents · Dreadful Visage equivalents