ΔE 10.2, fair: the same colour family, but not a straight swap. Quinacridone / Nickel Azo Gold is a little darker, more saturated than Magmadroth Flame. They are different kinds of paint: Citadel Magmadroth Flame is a one-coat contrast-style paint and Golden Quinacridone / Nickel Azo Gold is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Quinacridone / Nickel Azo Gold is a little darker, more saturated than Magmadroth Flame. They are different kinds of paint.
The same difference applies the other way round: Magmadroth Flame is a little lighter, 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.
See Magmadroth Flame on the colour wheel See Quinacridone / Nickel Azo Gold on the colour wheel
All matches: Magmadroth Flame equivalents · Quinacridone / Nickel Azo Gold equivalents