Bering Blue vs Pastel Blue

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Pastel Blue is a little darker, cooler than Bering Blue.

Can I use Pastel Blue instead of Bering Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Pastel Blue is a little darker, cooler than Bering Blue.

Can I use Bering Blue instead of Pastel Blue?

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