Ultramarine Red
An enchanting red-purple with excellent lightfastness. This is a super fun color to add if you have already explored most other areas of the palette. As soon as we tried this pigment there was no going back, as one cannot have too many lightfast red-purples.
A closely related pigment would be the pink varieties of PV15, which can vary a lot in color. PR259 is a bit redder than the rosiest PV15-pink-versions that we’ve tried in oils.
PR259 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Information about PR259 from Bruce MacEvoy, Handprint Guide to Watercolors,
Excellent
This color tends to get solid highest marks (8’s on the BWS), however we have not seen any data on PR259 in oils regarding choice of mixing white. In Golden’s lightfastness testing other ultramarines in the red/purple zone performed at ASTM II in mixes of pure flake or pure zinc.
Transparent, Semi-Transparent
Most paints formulated with this pigment are transparent, however a few are semi-transparent.
Thought to be in the category of Lower Concern
Treat all pigments and paints with studio safety protocols.
Low
This is not a super strong tinter.
Average
Fine
Polysulfide of sodium, potassium, lithium, or silver and aluminosilicate
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