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.
Bright blue ground with subtle darker and lighter blue diamond-like facets, overlaid by glowing green-yellow ring motifs of looped filaments arranged in a grid of octagonal rings, with partial rings at the edges meeting neighboring tiles in an even, staggered rhythm across the page.
background-image: url("https://images.tilejar.com/t/1991778676/pattern-p4m-triangle-1414275425-newton-basins-fold-512x512.png");
background-repeat: repeat;
background-size: 512px 512px;CC0 — use it for anything, no attribution needed.