We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Colour version of the original pattern.
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ