Prismatic Basic Pattern 2 No Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
You may use it as is, or modify it as you like.
Source V. Hartikainen
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
Abstract Ellipses Background Grayscale
Source GDJ
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
Retro Circles Background 7 No Black
Source GDJ
Continuing the geometric trend, here is one more.
Source Mike Warner
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs