Troglodyte Blue vs Intermediate Blue (US Navy)

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Intermediate Blue (US Navy) is a little lighter, more muted than Troglodyte Blue.

Can I use Intermediate Blue (US Navy) instead of Troglodyte Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Intermediate Blue (US Navy) is a little lighter, more muted than Troglodyte Blue.

Can I use Troglodyte Blue instead of Intermediate Blue (US Navy)?

The same difference applies the other way round: Troglodyte Blue is a little darker, 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.