In Madame Lerolle, Henri Fantin-Latour presents a woman seated gracefully, dressed in a dark gown. The background is softly blurred, emphasizing her figure. The palette is composed of rich, muted tones, with deep blacks and warm browns.

The lighting gently highlights her face, creating a serene atmosphere. The painting is executed in oil on canvas, a common medium for the time, allowing for rich texture and depth. The dimensions are approximately 65 x 81 cm, making it a medium-sized portrait. The brushwork is meticulous, showcasing Fantin-Latour's skill in capturing the subtleties of light and shadow.

The overall composition is balanced, focusing the viewer's attention on the subject. Henri Fantin-Latour was known for his portraits and still lifes, often depicting intimate scenes of everyday life. Madame Lerolle is a notable work that reflects the artist's interest in capturing the essence of his subjects. Interestingly, the sitter, Madame Lerolle, was a prominent figure in Parisian society and a muse for many artists of the time.

This painting exemplifies the Realism style, emphasizing naturalism and the beauty of ordinary moments.