This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Retro Circles Background 7 No Black
Source GDJ
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Adapted from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Colourful background achieved with gradient fills.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin