Cobalt Green Deep vs Phthalo Blue Red Shade
Choose any two products — oil colours, watercolours, mediums or primers — to see a concise comparison of how they differ and what they share, alongside the full specification table.


Cobalt Green Deep and Phthalo Blue Red Shade are both Michael Harding watercolours.
Cobalt Green Deep uses PG19; Phthalo Blue Red Shade uses PB15.1.
They differ in transparency, lightfastness, staining and tinting strength.
They share matching granulation and vegan status.
| Property | Cobalt Green Deep | Phthalo Blue Red Shade |
|---|---|---|
| Pigment Index | PG19 | PB15.1 |
| Lightfastness | Very Good | Excellent |
| Granulation | YES | YES |
| Staining | Medium | High |
| Transparency | Semi-Opaque | Transparent |
| Tinting Power | 3 | 4 |
| Series | Series 4 | Series 1 |
Colour Disclaimer: Colours shown on screen or in print may vary from the actual product. For the most accurate representation of colour, texture and finish, we recommend viewing a physical sample or swatch in person before making your final selection.


