In Under a black star, Paul Klee uses a dark color palette dominated by deep blues and blacks. The painting features abstract forms that suggest a night sky filled with stars. Shapes intertwine and overlap, creating a sense of movement and depth.

The overall composition evokes a feeling of mystery and introspection. The painting is characterized by Klee's signature use of line and color. He employs a variety of brushstrokes that add texture and dimension to the work. The abstract forms are not representational but rather convey emotions and ideas.

Viewers can appreciate the intricate details that Klee meticulously crafted. Paul Klee was a key figure in the development of modern art, blending elements of expressionism and abstraction. Under a black star reflects his fascination with the night and the cosmos. An interesting fact about this work is that it was created during a period when Klee was exploring themes of dreams and the subconscious.

This painting exemplifies his unique approach to color and form.