Spectrum Blue – Series 1

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Art Spectrum® Spectrum Blue is a vibrant and versatile blue formed from combing two classic pigments – Ultramarine and Phthalocyanine Blue. In effect it reproduces many of the characteristics of the great Cobalt Blue, but with the added economical and health advantages.

Cobalt Blue was discovered in 1802 by the French chemist, Louis Jacques Thénard. However, we find earlier forms used for centuries in Chinese ceramics and European painting throughout the Middle Ages during which time it was made from coloured glass.

Pigments Lightfastness Permanence Opacity Granulating /Staining
PB29, PB15:3 ASTM II ***           (very good) Semi-Transparent Staining

ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.

In accordance with proven traditional methods of production, all Art Spectrum® Artists’ Watercolours are carefully stone milled to enhance the individual brilliance of each selected permanent pigment and to maximise its handling qualities.