A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
If you want png files of thisu can download them here :
Source Viscious-Speed
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
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ