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
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A white version of the very popular linen pattern.
Source Ant Ekşiler
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Prismatic Groovy Concentric Background 2
Source GDJ
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez