Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Colorful Floral Background 3 No Black
Source GDJ
Element of beach pattern with background.
Source Rones
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
The name is totally random, but hey, it sounds good.
Source Atle Mo
Prismatic Geometric Pattern Background 2
Source GDJ
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
Colorful Floral Background No Black
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Black And White Floral Pattern Background Inverse
Source GDJ