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A bright, powerful green-blue. Valued by artists for its transparency, it gives very clear washes when well diluted. PB15 is divided into distinctive commercial types. PB15 : 1, PB15 : 2, PB15 : 3 etc. There is little difference between them in chemical make up and all are equally lightfast. The color varies slightly between the various types, some being greener than others. |