In Le Roi Malgré Lui, Jules Chéret uses vibrant colors to depict a lively theatrical scene. The poster features a central figure dressed in elaborate costume, surrounded by other characters in dynamic poses. The background is filled with decorative elements that enhance the overall composition.

The use of bold colors and flowing lines is characteristic of the Art Nouveau style. This artwork is a lithograph, a popular medium for posters in the late 19th century. The dimensions are approximately 100 x 70 cm, making it a sizable piece that would have attracted attention in public spaces. Chéret's technique involves layering colors and using intricate details to create depth and movement.

The poster’s design reflects the theatricality of the subject matter. Jules Chéret was a prominent figure in the Art Nouveau movement, known for his innovative poster designs. Le Roi Malgré Lui is one of his notable works that showcases his ability to blend art and advertising. Interestingly, Chéret was often referred to as the 'father of the modern poster' for his contributions to the medium.

This work exemplifies his impact on visual culture in the late 19th century.