Cobalt Blue
PB28
Manufacturer
Michael Harding
Range
Artists' Watercolour
Color no.
W411
Color family
Blue
Transparency
Semi-transparent
Lightfastness
★★★★★ Excellent
Staining
Yes
Granulation
No
Price group / series
Series 4
Single pigment
Yes
Swatch color as published by the manufacturer – on-screen rendering may differ. · michaelharding.co.uk/watercolours (product data, 2026-09-25)