Alizarin Purple
Alizarin Maroon AL
PV5AL
Alizarine Violet
Alizarine Maroon
A violet that makes it onto the insufficient lightfastness list in watercolor. Not suitable for artists' use.
PV5 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Moderate to Poor
A 1980s version of the NPIRI showed “appreciable” change in both masstone and tints for indoor test as well as outdoor testing in Florida. Other sources cite Moderate to Fair in some reports, Very Poor in Watercolor.
Transparent
Anthraquinone: salt of acid dye (aluminum)
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