The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
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
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
8 by 8 pixels, and just what the title says.
Source pixilated
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns