PR255 is an awesome, lightfast red-orange with incredible mixing abilities. It is equally awesome as Pyrrole Red, PR254, which is a bit better known. These two colors differ slightly with PR255 being more orange-leaning. Why would you want PR255 in addition to PR254? It makes smashing, chromatic tints that lean a little oranger than PR254. While it is not as opaque as cadmium red, it is capable of brighter tints which can be super useful. We love this color. Excellent lightfastness.
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Top Pigment
Pyrrole Scarlet
PR255
Alternate Name
Diketo-pyrrolo Pyrrole Scarlet
Pigment Description
Resources
PR255 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 PR255 from Bruce MacEvoy, Handprint Guide to Watercolors, General information about this class of pigments from Handprint,
Stats
Lightfastness
Excellent
Generally considered extremely lightfast. Thought to be ASTM I. Was not listed among Golden’s published tests in oils for mixing whites. This color held up well even in tints in Virgil Elliott’s extra intense lightfastness testing, though after about six years in the sun, there was a little bit of fading.
Transparency
Semi-Transparent
Most paints formulated with this pigment are classified as semi-transparent or semi-opaque.
Toxicity
Thought to be in the category of Lower Concern
Treat all pigments and paints with studio safety protocols.
Dry Time
Slow
Particle Size
Very Fine
Chemical Name
Diketopyrrolo pyrrole
Dry Pigments listing PR255
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