Astorath Red vs Naphthol Red Light

How close are they?

ΔE 12.9, fair: the same colour family, but not a straight swap. Naphthol Red Light is more muted, cooler than Astorath Red. They are different kinds of paint: Citadel Astorath Red is an opaque base/layer paint and Golden Naphthol Red Light is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Naphthol Red Light instead of Astorath Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Naphthol Red Light is more muted, cooler than Astorath Red. They are different kinds of paint.

Can I use Astorath Red instead of Naphthol Red Light?

The same difference applies the other way round: Astorath Red is more saturated, 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.