ΔE 14.0, fair: the same colour family, but not a straight swap. Tiamat Orange is more saturated, cooler than Demigod Flames.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Tiamat Orange is more saturated, cooler than Demigod Flames.
The same difference applies the other way round: Demigod Flames is more muted, warmer.
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 Demigod Flames on the colour wheel See Tiamat Orange on the colour wheel
All matches: Demigod Flames equivalents · Tiamat Orange equivalents