This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
An abstract pale yellow paper-like background with stains colored in yellow and green.
Source V. Hartikainen
A white version of the very popular linen pattern.
Source Ant Ekşiler
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
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
Prismatic Triangular Background Design Mark II 5
Source GDJ
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin