The Portrait of Gustave Courtois features a seated man, Gustave Courtois, dressed in formal attire. The artist uses a rich palette of deep blues and warm browns, creating a contrast that highlights Courtois' dignified expression. The background is softly blurred, drawing attention to the figure in the foreground.

The lighting is warm and inviting, enhancing the overall sense of realism in the work. This painting is executed in oil on canvas, showcasing the artist's skill in capturing textures and details. The brushwork is precise, especially in the rendering of Courtois' facial features and clothing. The composition is balanced, with Courtois positioned slightly off-center, creating a dynamic visual interest.

The dimensions are approximately 60 x 80 cm, making it a medium-sized portrait. Pascal-Adolphe-Jean Dagnan-Bouveret was known for his realistic portraits and historical scenes. This work, painted in the 1890s, reflects the artist's commitment to realism and his ability to convey character through facial expressions. An interesting fact about this painting is that it not only captures the likeness of Courtois but also reflects the artistic camaraderie between the two artists, as they were contemporaries in the French art scene.