Mocha Grunge@2X #1100
Gray CC BY-SA 3.0You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
More Textures
Perforated White Leather #635
Light CC BY-SA 3.0A bit of scratched up grayness. Always good.
Source Dmitry
Notebook@2X #1179
Gray CC BY-SA 3.0This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Background pattern 269 #2062
Dark CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Repeating Website Background (Blue Gray) #1192
Concrete CC BY-SA 3.0The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
Background pattern 239 (colour 2) #2216
Red CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Billie Holiday@2X #1003
Light CC BY-SA 3.0No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Light Wall #1265
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Hypnotic Pattern No Background #571
Noise CC 0Prismatic Hypnotic Pattern No Background
Source GDJ
Decorative divider 208 #2366
Dark CC 0Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Background pattern 215 (colour 2) #2370
Blue CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Light Paper Fibers@2X #836
Paper CC BY-SA 3.0More in the paper realm, this time with fibers.
Source Jorge Fuentes
Cubes #133
Light CC BY-SA 3.0This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Tex2res1@2X #722
Fabric CC BY-SA 3.0Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Ribbon pattern 2 (version 2, colour 5) #2035
Colorful CC 0The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Cross frame #1718
Dark CC 0Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Decorative divider 235 #2091
Dark CC 0From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Blizzard #663
Paper CC BY-SA 3.0This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Background pattern 252 (colour 3) #2160
Green CC 0Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Textured Grid Paper #1316
Orange CC BY-SA 3.0A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
White Plaster@2X #369
Wall CC BY-SA 3.0Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer