Prismatic Groovy Concentric Background 3 No Black
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
A blue gray fabric-like texture for websites. An yet another fabric-like texture. It has subtle vertical and diagonal stripes to it.
Source V. Hartikainen
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Colourful background achieved with gradient fills.
Source Firkin
This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
Might not be super subtle, but quite original in its form.
Source Alex Smith
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
This one is amazing, truly original. Go use it!
Source Viahorizon
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