CHICAGO, IL.- Presenting a unique behind-the-scenes look at recent conservation research on Pierre-Auguste Renoir’s painting Madame Léon Clapisson, Renoir’s True Colors: Science Solves a Mystery, on view in Gallery 226 through April 27, offers a rare peek at both the detective work done by Art Institute conservators and scientists and the secrets they have uncovered about the Impressionist’s painting process.

The painting depicts the socially ambitious young wife of one of Renoir’s wealthy patrons. Recently this striking portrait was taken into the conservation lab, and just the removal of the frame led to an unexpected discovery: around the perimeter at top and left was a sliver of intense violet-red, much more vibrant than the adjacent colors of the background that had not been protected from light by the frame. This deeply hued clue tipped off researchers to the fact that the cool and restrained mood of the current image probably does not match the artist’s original intent. Rather they found that Renoir initially infused the backdrop of the portrait with scarlets and purples largely made of carmine lake, a brilliant red pigment that, while bright and beautifully colored, is often very light-sensitive and can fade with time.

Armed with this new knowledge and new technologies such as nanotechnology, laser light, and advanced image processing software, the conservation department has been able to reconstruct the work’s original colors in a full-scale digital reproduction. This exhibition displays both this re-colorized reproduction and the original painting side-by-side, offering an opportunity to appreciate the changes, which, while dramatic, have not lessened the beauty and luminosity of the painting as it appears today. The original work is additionally presented in a case that allows 360-degrees views and thus a glimpse of the revelatory hues that have been hidden under the frame for over a century. Providing this front-row seat to the in-depth research work that typically takes places behind the scenes at the museum, this special presentation reveals the hidden story of how the painting was made and how it has changed over time, bringing visitors closer to the artist and his creative process.

Renoir’s True Colors is supported by research funding provided by the Getty Foundation, the Grainger Foundation, the David and Mary Winton Green Research Fund, the Samuel H. Kress Foundation, and the Andrew W. Mellon Foundation.