Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A comeback for you: the popular Escheresque, now in black.
Source Patten
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ