C.P. Cadmium Orange vs Isoindolinone Yellow

How close are they?

ΔE 11.0, fair: the same colour family, but not a straight swap. Isoindolinone Yellow is a little lighter than C.P. Cadmium Orange.

Can I use Isoindolinone Yellow instead of C.P. Cadmium Orange?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Isoindolinone Yellow is a little lighter than C.P. Cadmium Orange.

Can I use C.P. Cadmium Orange instead of Isoindolinone Yellow?

The same difference applies the other way round: C.P. Cadmium Orange is a little darker.

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.