Energy efficient LED lighting, which is widely used in museums across the world, has altered the color of Vincent van Gogh’s (1853-1890) famous Sunflowers (1888). Once a vivid yellow hue, van Gogh’s masterpieces are darkening; scientists have discovered that certain yellow pigments from the 19th century become unstable after exposure to LED lights, turning them a brownish green over time.
Researchers in France and Germany sampled 14 works dating from 1887 to 1890 and tested for the reaction, which affects the oil paint color chrome yellow. A popular pigment at the time, artists such as Paul Cézanne (1839-1906) and Paul Gauguin (1848-1903) often used chrome yellow in their paintings. Upon their discovery, researchers suggested that museums avoid using LED lighting on certain works and switch to a safer illumination alternative.
Van Gogh painted his sunflower series as a welcoming present for his friend, Gauguin, and planned to hang the works in the room where he was to stay while in Arles. A copy by van Gogh from the original series is on view at the Van Gogh Museum in Amsterdam.
