Magmadroth Flame vs Orange

How close are they?

ΔE 6.5, close: similar, with a visible difference side by side. Orange is more saturated than Magmadroth Flame.

Can I use Orange instead of Magmadroth Flame?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Orange is more saturated than Magmadroth Flame.

Can I use Magmadroth Flame instead of Orange?

The same difference applies the other way round: Magmadroth Flame is more muted.

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.