Flaming Orange vs Orange Fire

How close are they?

ΔE 7.8, close: similar, with a visible difference side by side. Orange Fire is more muted than Flaming Orange.

Can I use Orange Fire instead of Flaming Orange?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Orange Fire is more muted than Flaming Orange.

Can I use Flaming Orange instead of Orange Fire?

The same difference applies the other way round: Flaming Orange 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.