A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Prismatic Groovy Concentric Background 3
Source GDJ
Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
Abstract Tiled Background Extended 6
Source GDJ
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
This could be a hippy vintage wallpaper.
Source Tileable Patterns
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie