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.
Radiating star-like bursts of yellow-green, lime and gold rays, edged with dark green and orange streaks, sit on a diamond lattice of lozenge shapes between them. The bursts repeat at a regular interval across the grid, with the diamond gaps forming a steady secondary rhythm that ties each motif to its neighbours.
background-image: url("https://images.tilejar.com/t/2215167965/pattern-pmm-square-3714546548-polar-interference-512x512.png");
background-repeat: repeat;
background-size: 512px 512px;
CC0 — use it for anything, no attribution needed.