Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
This was formed by distorting an image of a background on Pixabay.
Source Firkin
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Might not be super subtle, but quite original in its form.
Source Alex Smith
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background 3
Source GDJ
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
If you need a green background for your blog/website, try this one. Remember that Green Striped Background is seamlessly tileable.
Source V. Hartikainen