Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Prismatic Triangular Background Design Mark II 5
Source GDJ
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
The image is a seamless pattern which is derived from a vine .Consequently, the vine got like dots via vectorization.The original vine is here:jp.pinterest.com/pin/500744052301410188/
Source Yamachem
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Prismatic Polka Dots 3 No Background
Source GDJ
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Prismatic Groovy Concentric Background 3
Source GDJ
There are many carbon patterns, but this one is tiny.
Source Designova