This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Background formed from the original with an emboss effect
Source GDJ
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A comeback for you: the popular Escheresque, now in black.
Source Patten
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ