Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Seamless Olive Green Web Background Image
Source V. Hartikainen
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A version without colours blended together to give a different look.
Source Firkin
Prismatic Abstract Background Design
Source GDJ
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
Prismatic Abstract Line Art Pattern Background
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Inspired by a pattern I saw in a 19th century book. This seamless pattern was created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin