Pigment Comparison
Viridian 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.
Product A
Viridian
W308
Product B
Phthalo Blue Red Shade
W139
How they compare
Viridian and Phthalo Blue Red Shade are both Michael Harding watercolours.
Viridian uses PG18; Phthalo Blue Red Shade uses PB15.1.
They differ in staining and tinting strength.
They share matching transparency, lightfastness, granulation and vegan status.
| Property | Viridian | Phthalo Blue Red Shade |
|---|---|---|
| Pigment Index | PG18 | PB15.1 |
| Lightfastness | Excellent | Excellent |
| Granulation | YES | YES |
| Staining | Non Staining | High |
| Transparency | Transparent | Transparent |
| Tinting Power | 1 | 4 |
| Series | Series 3 | Series 1 |
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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.