The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
A comeback for you: the popular Escheresque, now in black.
Source Patten
A free seamless background pattern for use on websites.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 3 No 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
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Can’t believe we don’t have this in the collection already! Slick woven pattern with crisp details.
Source Max Rudberg
Background formed from the original with an emboss effect
Source GDJ
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Original seamless pattern with an Inkscape filter.
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin