ΔE 12.2, fair: the same colour family, but not a straight swap. Sanctuary Red is a little lighter, more saturated than Primary Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Sanctuary Red is a little lighter, more saturated than Primary Red.
The same difference applies the other way round: Primary Red is a little darker, 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 Primary Red on the colour wheel See Sanctuary Red on the colour wheel
All matches: Primary Red equivalents · Sanctuary Red equivalents