ΔE 13.3, fair: the same colour family, but not a straight swap. Fairy Blood is much more saturated than Occultist Cloak.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Fairy Blood is much more saturated than Occultist Cloak.
The same difference applies the other way round: Occultist Cloak is much 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 Occultist Cloak on the colour wheel See Fairy Blood on the colour wheel
All matches: Occultist Cloak equivalents · Fairy Blood equivalents