Phthalo Blue Red Shade

PB15:1

Manufacturer

Michael Harding

Range

Artists' Watercolour

Color no.

W139

Color family

Blue

Transparency

Transparent

Lightfastness

★★★★★ Excellent

Staining

Yes

Granulation

Yes

Price group / series

Series 1

Single pigment

Yes

About this pigment

PB15:1 Phthalo Blue (Red Shade)

copper phthalocyanine (alpha) · Generic lightfastness: I

Swatch color as published by the manufacturer – on-screen rendering may differ. · michaelharding.co.uk/watercolours (product data, 2026-09-25)