bleen

Bleen is a fictional color first described by author and psychologist Arthur C. Clarke in his 1951 short story "The Sentinel." The story, which was later adapted into the film "2001: A Space Odyssey," features a character who experiences a vision of the color bleen. In the story, bleen is described as a color that is both red and green, existing simultaneously. This paradoxical nature suggests that bleen is not a color that can be perceived within the normal human visual spectrum, which is based on the three primary colors of red, green, and blue.

The concept of bleen has since been explored in various scientific and philosophical discussions regarding color perception and the limits of human senses. While bleen is a fictional construct, it serves as a thought experiment to consider how our understanding of color is tied to our biological makeup and the physics of light. Scientists and artists have used bleen as a way to discuss the idea of colors that might exist beyond our current ability to see or even imagine. It highlights the subjective nature of perception and the potential for realities beyond our direct experience.