Ducat Blue vs Plasma Coil Glow

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. Plasma Coil Glow is a little darker, cooler than Ducat Blue.

Can I use Plasma Coil Glow instead of Ducat Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Plasma Coil Glow is a little darker, cooler than Ducat Blue.

Can I use Ducat Blue instead of Plasma Coil Glow?

The same difference applies the other way round: Ducat 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.