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.
Flowing rust-red swirled contours on a near-black ground form eye-like lens shapes, diamond lozenges and scalloped arches that interlock across the surface. Mirrored motifs alternate in staggered rows, so the eye-shaped forms and open dark ovals rhythmically step up and down from one tile to the next.
CC0 — use it for anything, no attribution needed.