
Cobalt Blue Deep
Cobalt Blue Deep (No. 517) Ⓥ VEGAN Cobalt Blue Deep is one of the most dependable and elegant blues imaginable; rich, atmospheric and wonderfully lightfast. Possessing all the qualities that have made cobalt pigments favourites among painters for generations, it delivers depth, harmony and permanence in equal measure.
Cobalt Blue Deep is a single-pigment Michael Harding oil colour made with PB74 (Inorganic).
It is semi-opaque, excellent lightfastness, very fast drying time, average tinting strength.
It is ground in linseed oil with low oil content.
- Code
- No. 517
- Series
- Series 5
- Pigment Index
- PB74
- Pigment Type
- Inorganic
- Oil / Vehicle
- Linseed Oil
- Sizes
- 40ml · 60ml · 225ml, 1L, 2.5L, 5L
- Lightfastness
- Excellent
- Opacity
- Semi-Opaque
- Drying
- Very Fast
- Oil Content
- Low
- Tint Power
- Average
- Toxicity
- Non-Toxic
Measured colour data
Loading measured pigment data…
Tint · Tone · Shade · Glaze
Preview how Cobalt Blue Deep behaves when mixed, toned, shaded and glazed. Each swatch is computed from the masstone using a perceptual subtractive model - an approximation for guidance, not a formulation guarantee.

Cobalt Blue Deep straight from the tube.
A thin wash over white.
Mixed with Titanium White.
Mixed with a mid neutral grey.
Darkened with a chromatic black.
A thin transparent film over white.
Popular combinations
Open Cobalt Blue Deep in the Virtual Mixing Studio to preview how it combines with these partners before you reach for the palette.
Open Cobalt Blue Deep in Mixing StudioWhat pigment is used in Cobalt Blue Deep?
Cobalt Blue Deep is made with PB74.
Is Cobalt Blue Deep a single-pigment colour?
Yes. Cobalt Blue Deep uses a single pigment (PB74), so its behaviour stays consistent and predictable on the palette.
Is Cobalt Blue Deep transparent or opaque?
Cobalt Blue Deep is semi-opaque.
Is Cobalt Blue Deep lightfast?
Cobalt Blue Deep has excellent lightfastness.
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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.
