Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Prismatic Geometric Pattern Background No Black
Source GDJ
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A free seamless background pattern for use on websites.
Source V. Hartikainen
A bit strange this one, but nice at the same time.
Source Diogo Silva
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.
Source Firkin