“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.” See Williamsburg’s notes on how Pyrrole Red and Cadmium Red behave differently in mixes: https://www.justpaint.org/wp-content/uploads/2015/06/PRCYvsCRCYM.pdf. Also, Diketopyrrole-pyrrole (PR 254). Pyrroles are synthetic organic pigments and like Bismuth Vanadate, were introduced in the 1980’s. They are highly resistant to fading and have proven their salt in the automobile industry. In our line, Pyrrole Red finds its color space between Fanchon Red, Cadmium Red Medium and Cadmium Red Deep. As mentioned, it is a dense, opaque paint that feels very much like the Cadmium Reds with similar tinting strength, but mixes to a cleaner pink. This could be an important alternative to anyone wanting to avoid cadmiums because of concerns with heavy metals. Compared to Fanchon, Pyrrole Red is more opaque and lightfast, a bit darker in masstone and tints to a cooler pink. Overall it is a deep middle red that becomes warmer when made into a wash and cooler when tinted with Titanium White.” -Just Paint 2018 -Williamsburg