There are many carbon patterns, but this one is tiny.
Source Designova
Colour version of the original pattern.
Source Firkin
Colorful Floral Background 3 No Black
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
The name is totally random, but hey, it sounds good.
Source Atle Mo
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
An alternative colour scheme to the original seamless pattern.
Source Firkin
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Prismatic Hexagonalism Pattern No Background
Source GDJ