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.
Concentric rings of turquoise, blue, green and red interlock into clusters of circles, with small eight-sided rosettes nestled between them in a staggered grid. The clusters pair off diagonally and repeat in a regular rhythm, so the eye drifts from ring to ring across the field.
CC0 — use it for anything, no attribution needed. Read the FAQ