Baharroth Blue vs Gigawatt Blue

How close are they?

ΔE 10.0, close: similar, with a visible difference side by side. Gigawatt Blue is a little lighter than Baharroth Blue.

Can I use Gigawatt Blue instead of Baharroth Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Gigawatt Blue is a little lighter than Baharroth Blue.

Can I use Baharroth Blue instead of Gigawatt Blue?

The same difference applies the other way round: Baharroth Blue is a little darker.

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.