Van Gogh apparently mixed it with blues to create purple for Irises. But geranium lake is highly sensitive to light. “That’s ...

An exhibition in Boston celebrates the little known Roulins of Arles, a family that tempered the artist’s depressions and sat ...

Titled “Ultra-Violet: New Light on Van Gogh’s Irises,” the show is the ... Getty “That’s why, currently, the irises appear blue, because that red component has faded,” Devi Ormond ...

was that van Gogh achieved a violet color by mixing blue with a red pigment called “Geranium Lake,” which is particularly sensitive to light and fades under chronic exposure. “That’s why ...

Van Gogh created the violet by mixing together blue and red paints, including geranium lake, which is highly light sensitive and fades dramatically through exposure. Over time, the red has almost ...

Over the years, however, these red hues faded with exposure to light. This explains why Van Gogh's spring flowers now appear blue, rather than more purple in hue. Art historians have long ...

a light-sensitive paint van Gogh used called geranium lake has degraded over the years, removing the red color that he mixed with blue to achieve violet. Geranium lake is made from eosin Y dye—a ...

Over the years, however, these red hues faded with exposure to light. This explains why Van Gogh’s spring flowers now appear blue, rather than more purple in hue. Art historians have long ...

intense light and, perhaps, a connection to a region associated with the Marseille-based Adolphe Monticelli (1824-1886), whose crusty paintings Van Gogh admired.