- Chemical Description: Oxides of nickel, cobalt & titanium
- Pigment Numbers: PG50
- Lightfastness Rating: ASTM I
- Pigment Opacity: Opaque
- Paint Opacity: Opaque
- Series 5
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Cobalt Teal is a high performance cobalt pigment developed during the 20th century but the color itself as an artists color is much more ancient. It is similar to the color of the best quality turquoise stone which was mined in the Sinai and was crushed and processed to produce this gorgeous turquoise color. Since it was made directly from gemstones the color was fabulously expensive but since all art in ancient Egypt was made by artists and scribes in the employ of the temples and pigments were therefore ultimately paid for by the pharaoh cost was no object. Its name was mefkaht and it had an impressive hieroglyph that included the symbols for Horus, a viper, outstretched arms, the rising sun, and 3 grains of sand. Light green pigments generally were used to represent joy but turquoise was considered to the most important of these pigments and embodied promise and omens for the future. It was the color used to represent the rays of the rising sun and was said to be the color of the eye of the god Horus. It was also the color of Hathor who was the goddess of new born babies. One of her names was The Lady Of Turquoise. Clearly this color had huge meaning for the ancient Egyptians but after the fall of the Roman Empire turquoise pigment production fell into decline and in Europe there was no turquoise color like this available to artists until the 20th century.
Cobalt Teal is a true turquoise color much like the gemstone. There are many other colors available now that are called turquoise because we tend to apply it to any color midway between green and blue but only Cobalt Teal is like the original color used by the ancient Egyptians. Unlike those ancient people, however, who never mixed the color with any other pigment but used it pure, the modern artist is liberated to used this color to its full potential and it is very useful, especially for making greens but it has a couple of additional surprises up its sleeve.
Because Cobalt Teal can be considered simply as a light greenish blue one of its strengths is making light greens and some of them are quite unique and cannot be made with any other pigment. Mixing Cobalt Teal with Nickel Titanate makes the most delightful light apple green that is quite luminous while mixing it with Permanent Green Light makes gorgeous jade greens. A surprising bright yellow green is the result of a mixture with Cadmium Yellow Medium. Soft gray greens are made by mixing with either Transparent Red Oxide or with Hookers Green. These grey greens are a lot like the color of blue gum leaves in the shade.
Blues can also be interesting when made with Cobalt Teal. Try mixing with Australian Red Violet. It seems an unlikely combination but it makes a slightly neutralized dark reddish blue that is unlike any blue in a tube. A very pale gray-blue can be made by mixing Cobalt Teal with Ash Pink. Iridescence holds surprises too. Cobalt Teal with Iridescent white or Metallic Light Gold are delightful. In the end, however, few colors can match the beauty of this color straight from the tube and used pure just like the ancient Egyptians would have.