Thunderhawk Blue vs Payne’s Grey

How close are they?

ΔE 6.4, close: similar, with a visible difference side by side. Payne’s Grey is more muted, warmer than Thunderhawk Blue.

Can I use Payne’s Grey instead of Thunderhawk Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Payne’s Grey is more muted, warmer than Thunderhawk Blue.

Can I use Thunderhawk Blue instead of Payne’s Grey?

The same difference applies the other way round: Thunderhawk Blue is more saturated, cooler.

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.