A background should sit behind the text, not in place of it. This paragraph lies on the tile at its true scale — if it reads without effort, the tile can go under content.
Dense swirling bands of royal blue, green, cream and dark maroon form nested diamond star motifs with cream leaf-like petals, their flowing edges rippling outward. Each star-shaped cell and cream lozenge repeats in a regular grid, so the eye reads a steady rhythm of light and dark diamonds marching across the page.
CC0 — use it for anything, no attribution needed.