This may refer to Brunswick Blue or Turnbull's Blue, see PB27 for more.
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Prussian Blue
PB27:1
Pigment Description
Resources
PB27:1 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Information about PB27 from Bruce MacEvoy, Handprint Guide to Watercolors, General information about this class of pigments from Handprint,
CAMEO Materials Database: Conservation & Art Materials Encyclopedia Online, Museum of Fine Arts Boston. (Accessed June 2025). Prussian Blue https://cameo.mfa.org/wiki/Prussian_blue. Museum of Fine Arts Boston.
Stats
Lightfastness
Variable
See notes for PB27. While these are not identical it may be helpful to cross-reference
Transparency
Transparent
Toxicity
Hazard, Use more caution
Treat all pigments and paints with studio safety protocols.
Dry Time
Most paints average around 2 days
Chemical Name
Ferri-ammonium ferrocyanide
Dry Pigments listing PB27:1
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