ΔE 10.4, fair: the same colour family, but not a straight swap. Red Opulence is a little darker, more muted than Bloodmoon Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Red Opulence is a little darker, more muted than Bloodmoon Red.
The same difference applies the other way round: Bloodmoon Red is a little lighter, 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 Bloodmoon Red on the colour wheel See Red Opulence on the colour wheel
All matches: Bloodmoon Red equivalents · Red Opulence equivalents