This red lives in the fast lane, and with soaring chroma and stellar lightfastness it's a top-tier red pigment. It's no wonder Pyrrole Red was actually used on Ferrari's, it's a high-performance red that races past the competition. Cadmium Red can give Pyrrole a run for its money, but it's one of the only ones. We did a deep dive on Pyrrole Red where we made comparisons to cadmium red, explored Pyrrole's complements, and also delved into its use in mixes.

Williamsburg Pyrrole Red, PR254
Pyrrole Red is intense, semi-opaque, and lightfast. Overall it is a very intense color, which is a good thing. It takes a bit of work to mute it, and even in tints it holds its own with strength and clarity. In masstone it's a powerful middle red with high saturation.

A High Performance Red. Pyrrole Red, PR254 by Williamsburg
Pyrrole Red has excellent lightfastness. Pyrrole Red PR254 may also have slightly better lightfastness than the oranger Pyrrole variety (PR255), even though they are both listed as ASTM I. There is also another variant called Pyrrole Rubine PR264, which may also be an interesting color variation and is a separate pigment.

A daub of Williamsburg Pyrrole Red
There is another sub-variant of PR254 which leans a bit oranger. Vasari's Permanent Bright Red is a PR254 that leans closer to a PR255 (Pyrrole Scarlet). We delved into this difference in our in-depth article on Pyrrole Red.

Vasari's Permanent Bright Red looks a bit more like a PR255, but the pigment code is PR254
We love the regular versions of Pyrrole Red, but this warmer version for Vasari is interesting. Permanent Red Bright is an incredibly versatile color.

Vasari Permanent Red Bright PR254
Pyrrole Red is an incredible pigment to have in one's paintbox.

Kremer Pigments Irgazine Red, PR254 dry pigment
PR254 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com,
Spurgeon, Tad. Living Craft: A Painter's Process. Mt. Airy, Philadelphia, PA: Zoetrope, 2018. Newer version available here: https://www.thomaskitts.com/page/36804/tad-spurgeons-living-craft,
Information about PR254 from Bruce MacEvoy, Handprint Guide to Watercolors, General information about this class of pigments from Handprint
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Excellent
While overall the lightfastness of this color is excellent, Golden’s recent [Lightfastness testing[(https://justpaint.org/astm-lightfastness-testing-for-oil-paints/) revealed a slight falloff in performance depending on the mixing white. Flake white in linseed oil and pure zinc white took Pyrrole Red to an ASTM II. In all other mixing whites that they tested it performed at ASTM I - excellent.
Varies
Lower Concern
Treat all pigments and paints with studio safety protocols.
Medium
2-7 days. Some dry faster and may contain driers.
Diketopyrrolo pyrrole (DPP)
C₁₈H₁₀Cl₂N₂O₂
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