A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Green Background Pattern
Source V. Hartikainen
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Remixed from a PNG that was uploaded to Pixabay by k_jprather
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Colour version of the original seamless pattern.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Prismatic Abstract Line Art Pattern Background
Source GDJ
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Prismatic Polka Dots Mark II No Background
Source GDJ
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
A bit strange this one, but nice at the same time.
Source Diogo Silva