Yriel Yellow vs Hansa Yellow Medium

How close are they?

ΔE 11.2, fair: the same colour family, but not a straight swap. Hansa Yellow Medium is a little lighter, more saturated than Yriel Yellow.

Can I use Hansa Yellow Medium instead of Yriel Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Hansa Yellow Medium is a little lighter, more saturated than Yriel Yellow.

Can I use Yriel Yellow instead of Hansa Yellow Medium?

The same difference applies the other way round: Yriel Yellow 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.