ΔE 6.0, very close: most people won’t see a difference side by side. Fire Giant Orange is a little darker than Bright Orange. They are different kinds of paint: AMMO by Mig Bright Orange is an opaque base/layer paint and Army Painter Fire Giant Orange is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 6). Fire Giant Orange is a little darker than Bright Orange. They are different kinds of paint.
The same difference applies the other way round: Bright Orange is a little lighter.
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.
See Bright Orange on the colour wheel See Fire Giant Orange on the colour wheel
All matches: Bright Orange equivalents · Fire Giant Orange equivalents