C.P. Cadmium Red Light vs Sanctuary Red

How close are they?

ΔE 10.2, fair: the same colour family, but not a straight swap. Sanctuary Red is a little darker than C.P. Cadmium Red Light.

Can I use Sanctuary Red instead of C.P. Cadmium Red Light?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Sanctuary Red is a little darker than C.P. Cadmium Red Light.

Can I use C.P. Cadmium Red Light instead of Sanctuary Red?

The same difference applies the other way round: C.P. Cadmium Red Light is a little lighter.

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.