ΔE 9.8, close: similar, with a visible difference side by side. Transparent Naphthol Red Light is a little lighter than Pure Red. They are different kinds of paint: Army Painter Pure Red is an opaque base/layer paint and Golden Transparent 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.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Transparent Naphthol Red Light is a little lighter than Pure Red. They are different kinds of paint.
The same difference applies the other way round: Pure Red 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.
See Pure Red on the colour wheel See Transparent Naphthol Red Light on the colour wheel
All matches: Pure Red equivalents · Transparent Naphthol Red Light equivalents