Tanjiro is a young boy of average height with fairly tanned skin and an athletic, muscular physique. He has ruffled, black hair with burgundy tips, combed back to expose his forehead, and wide, dark red eyes with white pupils that appear lighter around the lower section of his irises. He wears the Demon Slayer Corps uniform, a simple all black long sleeved military style collared shirt with golden buttons and white outlines of the breast pocket and collar.