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.
Swirling marbled bands in magenta, orange, teal and green weave around diamond-shaped medallions, each centred on a small square frame with nested concentric rings. Square cartouches and star-like rosettes alternate on a regular grid, so the repeat reads as a steady diagonal rhythm of bright forms against a dark brown ground.
background-image: url("https://images.tilejar.com/t/2215167965/pattern-pmm-triangle-2769884110-marbling-on-aged-512x512.png");
background-repeat: repeat;
background-size: 512px 512px;CC0 — use it for anything, no attribution needed.