Temple Guard Blue vs Weathered Blue

How close are they?

ΔE 8.1, close: similar, with a visible difference side by side. Weathered Blue is more muted, warmer than Temple Guard Blue.

Can I use Weathered Blue instead of Temple Guard Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Weathered Blue is more muted, warmer than Temple Guard Blue.

Can I use Temple Guard Blue instead of Weathered Blue?

The same difference applies the other way round: Temple Guard 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.