Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Prismatic Abstract Background Design
Source GDJ
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Dark blue concrete wall with some small dust spots.
Source Atle Mo
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0
Source Sojan Janso
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
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
This is a remix of "geometrical pattern 01".
Source Yamachem
Geometric triangles seem to be quite hot these days.
Source Pixeden