Viking Blue vs Cerulean Blue Hue

How close are they?

ΔE 12.0, fair: the same colour family, but not a straight swap. Cerulean Blue Hue is a little darker, more saturated, warmer than Viking Blue. They are different kinds of paint: Army Painter Viking Blue is an opaque base/layer paint and Golden Cerulean Blue Hue is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Cerulean Blue Hue instead of Viking Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Cerulean Blue Hue is a little darker, more saturated, warmer than Viking Blue. They are different kinds of paint.

Can I use Viking Blue instead of Cerulean Blue Hue?

The same difference applies the other way round: Viking Blue is a little lighter, 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.