In Madame Guillaumin, Armand Guillaumin presents a vibrant portrait of a woman seated against a lush background. The colors are rich, with warm tones of red and orange contrasting with cooler greens and blues. The figure of Madame Guillaumin is depicted with a gentle expression, her attire reflecting the fashion of the time.

The brushwork is loose, characteristic of the Impressionism style, capturing the light and atmosphere of the moment. The painting is executed in oil on canvas, a common medium for portraits during the late 19th century. The dimensions are approximately 65 x 81 cm, making it a medium-sized work that invites close viewing. Guillaumin's technique includes visible brush strokes that create texture and depth, enhancing the overall impression of the piece.

The use of color and light is particularly notable, showcasing the artist's skill in capturing the essence of his subject. Armand Guillaumin was a key figure in the Impressionism movement, known for his vibrant color palette and innovative techniques. Madame Guillaumin is particularly interesting as it features his partner, who was also a significant influence on his work. This portrait not only highlights his personal life but also reflects the broader trends in portraiture during the Impressionist era.

Guillaumin's works are often overshadowed by his more famous contemporaries, yet they offer a unique perspective on the movement.