Extremely poor lightfastness in gouache. This color may be related to PB2 as well. Several varieties of this aniline dye seem to be around. If the specifics are important to your work, please consult other sources to determine the precise kind of dye that is being used, as it seems that Victoria Blue has changed over the years.
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Victoria Blue
PB1
Alternate Names
Basic Blue 26
Basic Blue 11
Fast Blue
Pigment Description
Resources
PB1 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
CAMEO Materials Database: Conservation & Art Materials Encyclopedia Online, Museum of Fine Arts Boston. (Accessed June 2025). Victoria Blue https://cameo.mfa.org/wiki/Victoria_blue. Museum of Fine Arts Boston.
Stats
Lightfastness
Very Poor
Poor
Transparency
Transparent
Toxicity
Thought to be category of lesser concern
Treat all pigments and paints with studio safety protocols.
Chemical Name
Triphenylmethane: PTMA salt of Basic Blue 7 dye, or Triphenylmethane Phospho-tungstomolybdic acid salt
C₃₃H₃₁N₃ - HCl
Dry Pigments listing PB1
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