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.
Vivid magenta, red, yellow, green and cyan bands radiate from diamond-shaped medallions arranged in a grid, with pointed lozenges and V-shaped chevrons interlocking between them. Each repeat meets at a bright central knot, so the eye travels in regular vertical and horizontal waves across the field.
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