Characteristics: Naphthol red is an intense, mid- to deep red, heading towards rose-red when thin.
Common Names: Naphthol red medium, naphthol crimson, permanent red, permanent crimson.
Color Index Name: PR170
(Color Index Explained)
Color Index Number: 12475
Pigment Origin: A synthetic red.
Used for Painting Since: 1920s.
Opacity/Transparency: Transparent/Semi-transparent.
(Opacity Explained)
Tinting Ability: Good.
(Tinting explained)
Lightfastness Rating: ASTM II.
(Lightfastness explained)
Oil Paint Drying Speed: Slow.
Specific Notes:
- Often used instead of cadmium red (which is a toxic pigment)
- Check the lightfastness rating on the tube as paints sold as naphthol red are not lightfast.
