Blick Oil Colors are made with quality ingredients, offering
artists an oil paint with a buttery texture, strong
pigmentation, and consistent performance. Blick Oil Colors are
an exceptional value. Fe7(CN)18(H2O)x or C6FeN6H4N Prussian Blue
is a semi-transparent, deep cyan-blue with a greenish undertone
and a very high tinting strength unequaled by most pigments. It
is similar to Phthalo Blue unless mixed with white, when it
gives up intensity and becomes smoky. It can behave erratically
and less reliably in oil and watercolor form depending on its
manufacture. For permanent painting Phthalo Blue is considered a
more reliable choice. Prussian Blue is lightfast and permanent
in all techniques except for fresco. When mixed with Zinc White
in watercolor or tempera form, it fades upon exposure to light
and completely regains its chromatic strength in the dark.
Modern manufacturing techniques have made this tendency less of
an issue in recent years Prussian Blue is moderately toxic if
ingested. It will emit toxic