A very beautiful green-leaning cyan which is a nice addition to the paintbox. While most people reach for PB15:3 instead, this is a slightly greener shade of phthalo blue (a sort of phthalo teal blue) which may be a pleasant color to have at the ready. A work-around for this color can be mixed with PB15:3 and PG7.
PB16 is almost black in masstone and becomes gloriously high chroma in tints and glazes. It tends to have excellent lightfastness.
While phthalos are thought to be less toxic than other some paints, avoid tubes made before 1982 (or even we have heard as late as1986) as they may be contaminated with PCBs-- and unfortunately it is not totally guaranteed that more modern phthalos will be free of these contaminants. Depending where a company sources their phthalo pigment it can be contaminated by PCBs and even dioxins, as countries do not all share the same regulations and standards. Please see Monona Rossol's work for more information. Handle all artist colors with care.
Also called metal free phthalocyanine.
