An unfortunate violet. M Methyl Violet or Methyl Violet 2B. A pigment with very poor lightfastness (ASTM IV or even ASTM V- very poor) as well as toxicity of B, so use with care. This color is used by Schmincke.
Unfortunately this color is also a listed as a carcinogen- see Monona Rossol's work on pigments for [more information].
