Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
The image depicts polka dot seamless pattern.
Source Yamachem
Alternative colour scheme for the original floral pattern.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
A seamless pattern formed from background pattern 102
Source Firkin
Feel free to download and use it, or see the rest of the dark background patterns that I have made. Anyway, I hope you will find something that you like.
Source V. Hartikainen
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin