There are many carbon patterns, but this one is tiny.
Source Designova
8 by 8 pixels, and just what the title says.
Source pixilated
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
This is a remix of "geometrical pattern 01".
Source Yamachem
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin