All Pigments
Colour Index Code
PB74
Cobalt Blue Deep
- Chemistry
- Cobalt zinc aluminate
- Origin
- Synthetic mineral.
- History
- A deeper, redder cobalt blue variant; very lightfast.
- Toxicity
- Cobalt - care required.
Cobalt Blue Deep (PB74) is Cobalt zinc aluminate. In our watercolour range it is semi-transparent, yes granulation, excellent lightfastness.
- Transparency
- Semi-Transparent
- Granulation
- YES
- Staining
- Medium
- Lightfastness
- Excellent
PB74: Questions & Answers
What is PB74?
PB74 (Cobalt Blue Deep) is Cobalt zinc aluminate. Synthetic mineral..
What is the chemistry of PB74?
PB74 is Cobalt zinc aluminate.
Is PB74 toxic?
Cobalt - care required.
Is PB74 lightfast?
In the Michael Harding range, colours using PB74 are rated excellent for lightfastness.
Is PB74 transparent or opaque?
PB74 is semi-transparent.
Does PB74 granulate?
In watercolour, PB74 is granulating.
Which Michael Harding colours use PB74?
PB74 appears in 2 Michael Harding colours: Cobalt Blue Deep, Cobalt Blue Deep.
Michael Harding colours using PB74
2 colours across both rangesLightfastness: ExcellentOil Colours containing PB74
1 colour
Watercolours containing PB74
1 colour
| Colour | Medium | Transparency | Lightfastness | Granulation |
|---|---|---|---|---|
| Cobalt Blue Deep No. 517 | Oil | Semi-Opaque | Excellent | — |
| Cobalt Blue Deep W412 | Watercolour | Semi-Transparent | Excellent | YES |
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