ΔE 13.0, fair: the same colour family, but not a straight swap. Sunset Orange is a little darker, more saturated, cooler than Lugganath Orange.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Sunset Orange is a little darker, more saturated, cooler than Lugganath Orange.
The same difference applies the other way round: Lugganath Orange is a little lighter, 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 Lugganath Orange on the colour wheel See Sunset Orange on the colour wheel
All matches: Lugganath Orange equivalents · Sunset Orange equivalents