Subtle scratches on a light gray background.
Source Andrey Ovcharov
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A comeback for you: the popular Escheresque, now in black.
Source Patten
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen