This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
The image depicts polka dot seamless pattern.
Source Yamachem
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Classic 45-degree pattern, light version.
Source Luke McDonald
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin