Interference Blue (Fine) vs Gold (Metallic)

How close are they?

ΔE 8.8, close: similar, with a visible difference side by side. Gold (Metallic) is more muted than Interference Blue (Fine). They are different kinds of paint: Golden Interference Blue (Fine) is a pearl paint and Vallejo Gold (Metallic) is a metallic, so they won’t behave the same on the model even where the colour is close.

Can I use Gold (Metallic) instead of Interference Blue (Fine)?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Gold (Metallic) is more muted than Interference Blue (Fine). They are different kinds of paint.

Can I use Interference Blue (Fine) instead of Gold (Metallic)?

The same difference applies the other way round: Interference Blue (Fine) 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.