A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A nice and simple white rotated tile pattern.
Source Another One
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin