Michael Harding Cobalt Green Deep - A Cobalt Titanate compound made by “cooking” at high temperature. A subtle, soft blue-green hue that is valuable in influencing low hues and blacks. Little Tint Power in higher keyed mixes but described by an artist as, “the one color that captures the foliage of English landscape."
| Color Index | PG19 |
| Drying Speed | Average |
| Transparency | Semi-Transparent |
| Lightfastness | Excellent |
| Oil Content | Low |
| Tint Power | Average |
| Toxicity | Non-Toxic |
| ASTM D-4236 | ✓ |
| Prop 65 | ✓ |