This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Used a cherry by doctormo to make this seamless pattern
Source Firkin
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
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
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A seamlessly tileable pink background texture.
Source V. Hartikainen
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
A pale olive green background with a seamless texture.
Source V. Hartikainen
Prismatic Abstract Geometric Background 3
Source GDJ
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Prismatic Groovy Concentric Background 4 No Black
Source GDJ