Night Blue vs Star Blue

How close are they?

ΔE 8.0, close: similar, with a visible difference side by side. Star Blue is a little darker than Night Blue.

Can I use Star Blue instead of Night Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Star Blue is a little darker than Night Blue.

Can I use Night Blue instead of Star Blue?

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

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.