Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A nice and simple white rotated tile pattern.
Source Another One
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
A free background pattern with abstract green tiles.
Source V. Hartikainen
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
An abstract web texture of a polished blue stone (or does it look more like ice).
Source V. Hartikainen
Prismatic Abstract Line Art Pattern Background
Source GDJ
Colourful background achieved with gradient fills.
Source Firkin