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GrumbacherPaints

Grumbacher Academy Acrylic - Prussian Blue Hue, 75 ml tube

Academy Acrylic

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  • Blick Art Materials
    $9.78 USDShop
    Recorded Oct 22, 2026, 1:03 AM UTC

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Product details
Size
75 ml
Blick SKU
00605-5220
About this product range

Grumbacher Academy Acrylics are a line of collegiate-grade, medium bodied acrylic paints available in an array of brilliant colors, including the most sought-after traditional colors, process colors, metallic colors, and iridescent colors. Developed in collaboration with world-class pigment suppliers, the number of pigments in individual colors are reduced, ensuring cleaner mixes and more accurate color matching without sacrificing tinting strength, opacity, or lightfastness. All colors have an ASTM lightfast rating of ‘Excellent’ and are labeled AP. Academy Acrylics are highly pigmented and offer superior tinting strength at a student-friendly price.

Made in the USA.

Pigment information

General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.

Phthalo Blue

Pigment code
PB15:3
Type
organic
Chemical name
beta copper phthalocyanine
Chemical formula
C32H16CuN8
Properties
Phthalo Blue PB15:3 is a structural variant of Phthalo Blue PB15 that produces more greenish tones.
Permanence
Phthalo Blues are completely lightfast and stable and are permanent for all paint uses. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.
Toxicity
Phthalo Blues have no significant hazards, although those made before 1982 contained some PCBs (polychlorinated biphenyls).
History
Developed by chemists using the trade name Monastral Blue, the organic blue dyestuff now known as Phthalo Blue was presented as a pigment in November 1935 in London. Its discovery was accidental. The dark color was observed in a kettle where a dye was being made from a British dyestuff plant. The demand for such a pigment came from commercial printers who wanted a cyan to replace Prussian Blue.
Description
Phthalo Blue Green Shade, Winsor Blue Green Shade

Dioxazine Violet

Pigment code
PV23
Type
organic
Chemical name
carbazole dioxazine
Chemical formula
C34H22Cl2N4O2
Properties
Dioxazine Violet is transparent and has very high tinting strength. It is a staining pigment, very dark valued when it is used at full strength. Concentrated, it paints out nearly black, but it mixes with Titanium White to form bright, opaque tints of purple. PV23 produces slightly redder shades than PV37. Because the hue can vary with the conditions of preparation and grinding, it may be offered in red shade, blue shade, and so forth.
Permanence
Dioxazine Violet has good lightfastness. There may be some concern about it fading or shifting in color in tints and washes. Some artists have reported that PV37, a molecular variant, is more lightfast than PV23.
History
Two molecular variants of Dioxazine Violet, PV23 and PV37, are available. They have similar properties, but mix slightly differently.
Description
Dioxazine Purple, Chromothal Violet, Mauve, Carbazole Violet.

Ivory Black

Pigment code
PBk9
Type
charred animal bone
Chemical name
carbon + calcium phosphate
Chemical formula
C + Ca3(PO4)2 or C x CaPO4
Properties
Ivory Black is a cool, semi-transparent blue-black with a slight brownish undertone and average tinting strength. It mixes well with any color, and creates a range of dull greens when mixed with yellow. It has good properties for use in oil, can be slow to dry in oil form, and should never be used in underpainting or frescoing. Ivory Black is denser than Lamp Black.
Permanence
Ivory Black is very lightfast and has good permanence, though it is considered the least permanent of the major black pigments.
Toxicity
Ivory Black has no significant hazards.
History
Ivory Black is a carbon based black first named as Elephantium, and described in the 4th century BCE as produced by heating ivory scraps in clay pots to reduce the ivory or bone to charcoal. The deviation in names is because the more expensive varieties of this pigment were made by burning ivory, and the less expensive ones by burning animal bone. In the 19th century, the name Ivory Black was finally permitted to be applied to Carbon Black pigments made from bone. True Ivory Black is rare in modern times due to the protection of ivory, and the synthetic variety produced today was discovered in 1929. Bone Black is produced as an industrial pigment.
Description
Animal Black, Blue Black, Bone Black. Paris Black is an inferior grade of Ivory Black. Incorrectly labeled as Frankfort Black.

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