A version without colours blended together to give a different look.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin