ΔE 5.7, very close: most people won’t see a difference side by side. Our swatches for the two are almost the same. They are different kinds of paint: Citadel Magmadroth Flame is a one-coat contrast-style paint and Green Stuff World Fluor Orange is a fluorescent or effect 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). The swatches are almost the same. They are different kinds of paint.
The same difference applies the other way round.
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 Magmadroth Flame on the colour wheel See Fluor Orange on the colour wheel
All matches: Magmadroth Flame equivalents · Fluor Orange equivalents