Kantor Blue vs Exile Blue

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Exile Blue is more muted than Kantor Blue.

Can I use Exile Blue instead of Kantor Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Exile Blue is more muted than Kantor Blue.

Can I use Kantor Blue instead of Exile Blue?

The same difference applies the other way round: Kantor Blue is more saturated.

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.