This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Just like the black maze, only in light gray. Duh.
Source Peax
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Might not be super subtle, but quite original in its form.
Source Alex Smith
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
The image depicts a seamless pattern of Japanese Edo pattern called "kikkou-matsu" or "亀甲松" meaning " tortoiseshell-pinetree".The real pinetree is like this: https://jp.pinterest.com/pin/500744052301065077/
Source Yamachem
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Derived from a JPG that was uploaded to Pixabay by ractapopulous
Source Firkin
This is a remix of "geometrical pattern 01".
Source Yamachem