C.P. Cadmium Red Light vs Light Red

How close are they?

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

Can I use Light 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). Light Red is a little darker, more muted than C.P. Cadmium Red Light.

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

The same difference applies the other way round: C.P. Cadmium Red Light 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.