Classic ruby or cherry red, similar to Cadmium Red Medium, but cleaner, more saturated in tints and blends. A more opaque and lightfast alternative to Naphthol-based permanent reds. Series: 4 CI Number: PR 254 CI Name: Pyrrole Red Pigment Name: Diketopyrrole-pyrrole Lightfastness: I - Excellent Opacity: Semi-Opaque Grind: Very Fine