ΔE 8.5, close: similar, with a visible difference side by side. Flat Flesh is more muted than Flame Orange.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Flat Flesh is more muted than Flame Orange.
The same difference applies the other way round: Flame 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.
See Flame Orange on the colour wheel See Flat Flesh on the colour wheel
All matches: Flame Orange equivalents · Flat Flesh equivalents