Deep Yellow vs Daemonic Yellow

How close are they?

ΔE 6.1, close: similar, with a visible difference side by side. Daemonic Yellow is more saturated than Deep Yellow.

Can I use Daemonic Yellow instead of Deep Yellow?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Daemonic Yellow is more saturated than Deep Yellow.

Can I use Deep Yellow instead of Daemonic Yellow?

The same difference applies the other way round: Deep Yellow is 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.