Oil Bars: Single-Pigment Colors – Synthetic Pigments
 
 
Cobalt Blue Oil Bar
 
 
Joules & Joules Cobalt Blue Oil Bar is a derivation of our Cobalt Blue oil paint. In this process, safe quantities of beeswax and carnauba wax are added to the recipe, keeping the outer membrane solid, and the oil bar creamy inside. Joules & Joules Cobalt Blue is a vibrant, semi-opaque, and highly lightfast intermediary blue with moderate tinting strength and covering power. Since 1804, when it was first made, it has been one of the most popular blue shades. Additionally, commonly known as `true blue`, it features as the primary color blue in many artists' palettes due to its quality of neither being greenish nor purplish in its undertones.
 

Pigment Classification
Synthetic Inorganic
Chemical Composition
Cobalt and Aluminum Oxides - CoAl2O4
Color Index
PB 28
Binder
Cold-Pressed Linseed Oil, Cold-Pressed Safflower Oil, and Sun Thickened Linseed Oil
Stabilizers
Beeswax and Carnauba Wax
Transparency/Opacity
Semi Opaque
Lightfastness
I (Excellent)
Tinting Strength
Medium
Drying Rate
Fast
Observations
Not affected by light or heat. Over time, it may whiten slightly to a more pastel tone. Can darken when mixed with Lead White.
Toxicity
Non-toxic. Avoid contact, inhalation of pigment powder.
Material Safety Data Sheet (MSDS)
Can be accessed on the website here.
Series
4
Availability
80ml bars - 11.5 x 3.5 x 1.5 cm.