Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
This is sort of fresh, but still feels a bit old school.
Source Martuchox
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Tile-able Dark Brown Wood Background. Feel free to use it as a background image in your designs or somewhere on the web. By the way, the color seems to be close to Coffee Brown.
Source V. Hartikainen
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Geometric triangles seem to be quite hot these days.
Source Pixeden
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
"Beige Stone", Tileable Texture.
Source V. Hartikainen