A dark brown fabric-like background texture with seamless pattern of winding stripes.
Source V. Hartikainen
Classic vertical lines, in all its subtlety.
Source Cody L
This one needs to be used in small areas; you can see it repeat.
Source Luca
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Prismatic Basic Pattern 2 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Seamless Prismatic Geometric Pattern With Background
Source GDJ
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Prismatic Abstract Background Design No Black
Source GDJ
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
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
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
This one is amazing, truly original. Go use it!
Source Viahorizon
Feel free to use this seamless background texture as a background on a web site. It's colored in a light pink color and is seamlessly tile-able.
Source V. Hartikainen