Maxfield Parrish, one of the greatest skyscape painters of all times, preferred the rich hues of cobalt oxide-aluminum oxide or Cobalt Blue, over the better known Aquamarine shades used by his contemporaries. As a result, the shade is sometimes referred to as Parrish blue. It is also sometimes referred to as Dresden blue and Thénards blue. Vincent van Gogh considered Cobalt Blue a “divine color” and thought it the perfect hue for portraying the athosphere. Windsor & Newton is known for their superior quality oil paint formulations. The pure pigments in this line of paint ensures the cleanest colors by means of their unmatched dedication to quality control. Perfect for mixing or for use alone, Cobalt Blue #178 is one of Windsor & Newton’s most prized formulas. The purity of this 4 oz. tube provides optimum strength for tinting when reduced and stays open for several days.