The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
Prismatic Geometric Pattern Background
Source GDJ
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
A white version of the very popular linen pattern.
Source Ant Ekşiler
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A bit strange this one, but nice at the same time.
Source Diogo Silva
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Same classic 45-degree pattern, dark version.
Source Luke McDonald
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Background pattern originally a PNG drawn in Paint.net
Source Firkin
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin