Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Embossed lines and squares with subtle highlights.
Source Alex Parker
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Here's a brown background pattern with subtle stripes. I hope you'll like the color. If not, feel free to change it using an image editor, if you know how of course. Personally, I'm using GIMP to create these backgrounds.
Source V. Hartikainen
Otis Ray Redding was an American soul singer-songwriter, record producer, arranger, and talent scout. So you know.
Source Thomas Myrman
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Geometric triangles seem to be quite hot these days.
Source Pixeden
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A white version of the very popular linen pattern.
Source Ant Ekşiler
Prismatic Abstract Background Design
Source GDJ