A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Prismatic Chevrons Pattern 5 With Background
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
There are many carbon patterns, but this one is tiny.
Source Designova
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile