In Frederick Barbarossa learning of his excommunication, Lawrence Alma-Tadema presents a dramatic scene filled with rich colors. The painting features Frederick Barbarossa, dressed in regal attire, surrounded by advisors and clergy. The expressions on their faces convey tension and concern as they react to the news of his excommunication.

The setting is opulent, with intricate details that reflect the historical context of the moment. The painting is executed in oil on canvas, showcasing Alma-Tadema's skill in capturing texture and light. The use of warm tones contrasts with the somber theme of excommunication, creating a striking visual impact. Viewers can appreciate the meticulous attention to detail in the clothing and architecture, which are characteristic of Alma-Tadema's work.

The composition draws the eye to Barbarossa, emphasizing his central role in the narrative. Lawrence Alma-Tadema was known for his historical scenes that often depicted ancient Rome and Greece, but this work focuses on a pivotal moment in medieval history. The painting reflects the artist's interest in the interplay of power and religion. An interesting fact about this work is that it captures a moment of personal and political crisis for Barbarossa, highlighting the tensions between church and state during the 12th century.

This piece exemplifies Alma-Tadema's ability to blend historical accuracy with dramatic storytelling.