Caledor Sky vs Azurite Hue

How close are they?

ΔE 7.9, close: similar, with a visible difference side by side. Azurite Hue is more muted, cooler than Caledor Sky.

Can I use Azurite Hue instead of Caledor Sky?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Azurite Hue is more muted, cooler than Caledor Sky.

Can I use Caledor Sky instead of Azurite Hue?

The same difference applies the other way round: Caledor Sky is more saturated, warmer.

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.