I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
Prismatic Abstract Geometric Background 5
Source GDJ
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Sort of reminds me of those old house wallpapers.
Source Tish
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Abstract Ellipses Background Grayscale
Source GDJ
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin