In Jupiter and Semele, Gustave Moreau presents a dramatic scene filled with rich colors. Jupiter, depicted as a powerful figure, looms over Semele, who appears both awed and vulnerable. The background features swirling clouds and ethereal light, enhancing the mythological atmosphere.

The use of gold and deep blues adds to the painting's opulence. The painting is characterized by its intricate details, typical of Moreau's Symbolist style. The figures are rendered with a blend of realism and fantasy, showcasing Moreau's skill in creating lifelike expressions. The composition draws the viewer's eye towards the central figures, emphasizing their emotional connection.

The use of oil on canvas allows for vibrant color layering and texture. Gustave Moreau was a key figure in the Symbolist movement, known for his dreamlike imagery and mythological themes. Jupiter and Semele is particularly interesting as it reflects Moreau's fascination with the interplay of light and shadow. This work also highlights the artist's ability to convey complex emotions through his characters.

Moreau's unique approach has influenced many artists in the realms of fantasy and symbolism.