This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
This is sort of fresh, but still feels a bit old school.
Source Martuchox
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
Retro Circles Background 4 No Black
Source GDJ
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
An abstract pale yellow paper-like background with stains colored in yellow and green.
Source V. Hartikainen
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
The image is a seamless pattern of a fishnet.
Source Yamachem
Otis Ray Redding was an American soul singer-songwriter, record producer, arranger, and talent scout. So you know.
Source Thomas Myrman
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin