Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Prismatic Abstract Geometric Background 4
Source GDJ
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
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
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
A blue gray fabric-like texture for websites. An yet another fabric-like texture. It has subtle vertical and diagonal stripes to it.
Source V. Hartikainen
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin