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.
Muted teal linework on a pale mint-white ground forms star-like rosettes with thin, layered strokes radiating from a pale centre. Each motif sits in a grid of evenly spaced columns and rows, with cross-shaped gaps of open background linking neighbouring figures into a regular, rhythmic lattice.
CC0 — use it for anything, no attribution needed.