A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
The name is totally random, but hey, it sounds good.
Source Atle Mo
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Subtle scratches on a light gray background.
Source Andrey Ovcharov
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
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
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Retro Circles Background 5 No Black
Source GDJ