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.
Tonal blue ornament with darker and lighter blue lines forming interlocking diamond and lozenge medallions, each filled with fine, feathery floral detailing. Diamond medallions alternate with rounded, lens-shaped frames in a steady grid, so the eye moves across rows of centered motifs that repeat in staggered diagonal rhythm.
CC0 — use it for anything, no attribution needed.