Colour Index Code

PB60

Indanthrone Blue

Chemistry: Anthraquinone
Origin: Synthetic organic.
History: A deep, warm, transparent blue introduced 1901; very lightfast.
Toxicity: Non-toxic.

Indanthrone Blue (PB60) is Anthraquinone. In our watercolour range it is transparent, no granulation, excellent lightfastness.

Transparency: Transparent
Granulation: NO
Staining: High
Lightfastness: Excellent

PB60: Questions & Answers

What is PB60?

PB60 (Indanthrone Blue) is Anthraquinone. Synthetic organic..

What is the chemistry of PB60?

PB60 is Anthraquinone.

Is PB60 toxic?

Non-toxic.

Is PB60 lightfast?

In the Michael Harding range, colours using PB60 are rated excellent for lightfastness.

Is PB60 transparent or opaque?

PB60 is transparent.

Does PB60 granulate?

In watercolour, PB60 is non-granulating.

Which Michael Harding colours use PB60?

PB60 appears in 2 Michael Harding colours: Indanthrone Blue, Indanthrone Blue.

Pigment History

The story of PB60

A deep, warm, transparent blue prized for darks and glazes - among the most lightfast of the synthetic organics.

How it is made

Indanthrone is synthesised from anthraquinone to produce a deep, warm, very lightfast blue. Milled into oil it yields a transparent, staining colour ideal for rich dark glazes.

In the hands of the masters

A 20th-century pigment with no Old Master history, indanthrone nonetheless lets modern painters recreate the deep, warm blues of indigo and Prussian without their drawbacks.

Origin

Synthetic organic - introduced 1901.

Chemistry

An anthraquinone-derived synthetic organic pigment.