Abstract blue geometric polygon background featuring faceted triangular shapes in varying cyan and navy tones, creating a modern low-poly mosaic texture for digital and print design.

abstract geometric polygon triangle triangles lowpoly mosaic pattern texture background blue cyan navy teal aquamarine turquoise gradient faceted facets angular shapes modern contemporary design wallpaper surface decorative graphic digital art composition seamless repeatable tiling vector illustration minimal stylish elegant cool sea ocean depth flat layered crystal prism geometry palette