Rublev Colours Cobalt Chromite Blue is an intense dark blue with greenish-undertones when mixed with white from inorganic pigment of cobalt chromite, called incorrectly “Cerulean blue” in other oil paint ranges. It is a semi-transparent, fine grained color with high tinting strength.
Composition and Permanence
|Cobalt Chromite Blue |
|Color: ||Blue |
|Binder: ||Linseed oil |
|Additive(s): ||None |
|Pigment Information |
|Pigment: ||Cobalt chromite blue spinel |
|Pigment Classification: ||Synthetic inorganic |
|Colour Index: ||Pigment Blue 36 (77343) |
|Chemical Name: ||Cobalt chromite blue spinel |
|Chemical Formula: || Co(Al,Cr4O4) |
|CAS No. ||68187-11-1 |
|Code: ||122 |
|Series: ||7 |
|Opacity: ||Semi-Transparent |
|Tinting Strength: ||High |
|Drying Rate: ||Medium |
|Lightfastness: ||I |
|Permanence: ||A |
|Safety Information: ||Based on toxicological review, there are no acute or known chronic health hazards with the anticipated use of this product. Always protect yourself against potentially unknown chronic hazards of this and other chemical products by avoiding ingestion, excessive skin contact, and inhalation of spraying mists, sanding dusts, and concentrated vapors. Contact us for further information or consult the MSDS for more information. |
For a detailed explanation of the terms in the table above, please visit Composition and Permanence.
Some separation of pigment and oil may occur in Rublev Colours Artist Oils and is a natural process when no wax or stabilizers are added to paint to prevent this from occurring.
All images of color swatches in this web site are only approximations of the actual color of the oil paint. We have taken every care to match the color in these pictures on calibrated color monitors to the actual color. However, because of the wide variance in color monitors the results you get may vary.
Color Swatch Note: The color swatch was created with a thick application (left side) of color and a tint (right side) made with equal parts of color and titanium white and applied on acrylic primed cotton canvas.
Drawdown Note: The image of the "drawdown" contains a pre-mixed paint film of 6 mil (0.006 inch) thickness applied to a standard test card for the purposes of examining color consistency, opacity and other qualities. The drawdowns show the color full strength (mass tone), on the left, and mixed in a 1:2 ratio with titanium white on the right. The bottom area of the drawdowns are scraped to show undertones.