Pyrazoloquinazolone Orange
PO67
Pigment Description
One of the modern oranges that crops up in paint lines now and then. While not the most lightfast orange, it is not the worst, either. While not quite lightfast enough for our purposes, it is otherwise a nice red-orange that tints well, and retains high chroma in tints.
Old Holland Coral Orange made of PO67
Pyrazoloquinazolone Orange does not turn as pink in tints as PO73 (Pyrrole Orange) does— so in other words, PO73 makes a slightly rosier pink than PO67. Interestingly, Pyrazoloquinazolone Orange doesn't seem to move Munsell hue much in tints, and is a bit oranger/yellower overall than PO73 with a bit less chroma as well and a bit more opacity.
Old Holland Coral Orange, PO67
PO67 has a bold bright middle orange in masstone. It is not officially rated by the older ASTM standard, however it does appear to have some lightfastness issues. It is estimated to be somewhere around an ASTM II in watercolor, but Bruce MacEvoy recommends caution. In oil, a couple of paintmakers give it high marks, so it may be worth doing your own lightfastness tests using the mixing white of your choice.
An impasto stroke of Old Holland Coral Orange, PO67
Resources
PO67 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
Information about PO67 from Bruce MacEvoy, Handprint Guide to Watercolors
Stats
Lightfastness
Very Good but not Excellent
Possibly ASTM II but has not been officially rated.
Transparency
Opaque, Semi-Opaque
A couple of paintmakers list their variety in oils as Semi-Transparent, but this may have to do with the way they formulated the paint itself.
Dry Time
Slow
At least one manufacturer lists the dry time as 6-18 days in oil.
Particle Size
Fine
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