There are many carbon patterns, but this one is tiny.
Source Designova
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin