To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
A free background pattern with abstract green tiles.
Source V. Hartikainen
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Prismatic Abstract Background Design No Black
Source GDJ
A bit of scratched up grayness. Always good.
Source Dmitry
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Derived from a JPG that was uploaded to Pixabay by ractapopulous
Source Firkin
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin