ΔE 7.4, close: similar, with a visible difference side by side. Blue Glaze is a little lighter than Alpha Blue. They are different kinds of paint: Army Painter Alpha Blue is an opaque base/layer paint and Two Thin Coats Blue Glaze is an ink, glaze or transparent 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). Blue Glaze is a little lighter than Alpha Blue. They are different kinds of paint.
The same difference applies the other way round: Alpha Blue 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.
See Alpha Blue on the colour wheel See Blue Glaze on the colour wheel
All matches: Alpha Blue equivalents · Blue Glaze equivalents