Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Prismatic Hexagonalist Pattern No Background
Source GDJ
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Prismatic Groovy Concentric Background No Black
Source GDJ
The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.
Source Yamachem
Background pattern originally a PNG drawn in Paint.net
Source Firkin
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
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Sort of reminds me of those old house wallpapers.
Source Tish
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Background formed from the original with an emboss effect.
Source Firkin
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ