ΔE 10.5, fair: the same colour family, but not a straight swap. Azurite Hue is a little darker, more muted than Talassar Blue. They are different kinds of paint: Citadel Talassar Blue is a one-coat contrast-style paint and Golden Azurite Hue is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Azurite Hue is a little darker, more muted than Talassar Blue. They are different kinds of paint.
The same difference applies the other way round: Talassar Blue is a little lighter, more saturated.
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 Talassar Blue on the colour wheel See Azurite Hue on the colour wheel
All matches: Talassar Blue equivalents · Azurite Hue equivalents