Cobalt Blue
PB28
Manufacturer
Rockwell
Range
Classical Watercolor
Color no.
M553
Color family
Blue
Transparency
Semi-transparent
Lightfastness
★★★★★ Excellent
Granulation
Yes
Price group / series
Series 5
Single pigment
Yes
Color values are computed from the pigment composition and are indicative only. They are no substitute for a real color chart. · rockwellart.global – Classical Watercolor Tubes (product data, 2026-09-25)