Temple Guard Blue vs Turquoise Blue

How close are they?

ΔE 9.8, close: similar, with a visible difference side by side. Turquoise Blue is warmer than Temple Guard Blue.

Can I use Turquoise Blue instead of Temple Guard Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Turquoise Blue is warmer than Temple Guard Blue.

Can I use Temple Guard Blue instead of Turquoise Blue?

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