Nickel Azo Yellow vs Deep Yellow

How close are they?

ΔE 13.2, fair: the same colour family, but not a straight swap. Deep Yellow is a little lighter, more saturated, cooler than Nickel Azo Yellow.

Can I use Deep Yellow instead of Nickel Azo Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Deep Yellow is a little lighter, more saturated, cooler than Nickel Azo Yellow.

Can I use Nickel Azo Yellow instead of Deep Yellow?

The same difference applies the other way round: Nickel Azo Yellow is a little darker, more muted, warmer.

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.