An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Lovely pattern with splattered vintage speckles.
Source David Pomfret
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A version without colours blended together to give a different look.
Source Firkin
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Abstract Background Design
Source GDJ
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
A bit strange this one, but nice at the same time.
Source Diogo Silva
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
Just like your old suit, all striped and smooth.
Source Alex Berkowitz