Cobalt Violet Hue

Pigment History: First developed in 1859, Cobalt Violet is a general name for several violet color cobalt pigments. Cobalt Violets range from deep to pale shades with either a pink or blue hue. Toxic, costly, and weak, Cobalt Violets were soon replaced by Manganese Violet. When evaluating the weak and dull transparent nature of Cobalt Violets, GOLDEN first looked at the shade range to find a color unique enough to warrant re-creating for artists. By blending Diozazine Purple with Quinacridones and Zinc White, GOLDEN creates a subtle yet complex color not found in modern pigment families.
Pigment Classification: Mixture
Chemical Description:Quinacridone / ZincOxide / Carbazole Dioxazine
Opacity/Transparency: 3
Lightfastness Rating: II
Permanency: Very Good
Colour Index Name: PV 19 / PW4 / PR122 / PV23
Colour Index Number: 73900 / 73915 / 77947 / 51319
Munsell Notation Listing:
Hue: 3.5 RP
Value: 2.95
Chroma: 3.2
Spectrophotometer Readings: N/A
Viscosity Range: 20000-27000 CPS
PH Range: 8.7-9.0
Gloss Average: 29.12
CIE L*a*b* Values: L*29.89 a*19.04 b-7.49
Tint Strength: 77.59

The Lightfastness Ratings included in this chart are provided by the American Society for Testing and Materials (ASTM) in the standard for “Artists’ Acrylic Emulsion Paints”. (ASTM D 5098, Annual Book of Standards, Volume 6.02). Colors with a Lightfastness Rating of I are considered Excellent (“Exc.”) and those with a Lightfastness Rating of II are Very Good (“V.G.”). Where Lightfastness Ratings have not been obtained according to ASTM test protocol, “NA” is indicated in the table. In these cases, data from pigment manufacturers and our own test facilities have been used and an appropriate description assigned under Permanency.

**The identified colors are sensitive to a combination of moisture and UV radiation and are not recommended for outdoor use.

For Opacity/Transparency, we have determined that an eight-point scale is most appropriate for describing the properties of our colors. We have assigned each color in the chart a number from 1 (most opaque) to 8 (most transparent) to indicate the relative opacity/transparency of that color.

The C.I. (Colour Index) Name is an internationally recognized code assigned to a particular “colorant.” The C.I. Name consists of the category (type of dye or pigment), general hue and serial number assigned, based on its chemical constitution. For example, PB 60, Anthraquinone Blue, indicates a specific Pigment Blue. The C.I. Number is a five-digit reference number assigned in the Colour Index based on the chemical structure of a colorant, regardless of usage class.

Notes:
1) The Golden C.P. designation indicates concentrated cadmium pigments (CC).

2) Information about Iridescent and Interference products apply for both Fine and Coarse grades.