This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Embossed lines and squares with subtle highlights.
Source Alex Parker
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Prismatic Groovy Concentric Background 2
Source GDJ
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A new one called white wall, not by me this time.
Source Yuji Honzawa
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin