Tyrian Navy vs Iceberg Grey

How close are they?

ΔE 7.3, close: similar, with a visible difference side by side. Iceberg Grey is a little lighter, more saturated, warmer than Tyrian Navy.

Can I use Iceberg Grey instead of Tyrian Navy?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Iceberg Grey is a little lighter, more saturated, warmer than Tyrian Navy.

Can I use Tyrian Navy instead of Iceberg Grey?

The same difference applies the other way round: Tyrian Navy is a little darker, more muted, 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.