Background pattern 223 (colour 5) #2349
Blue CC 0Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
More Textures
Prismatic Curved Diamond Pattern 7 No Background@2X #548
Noise CC 0Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Prismatic Curved Diamond Pattern 6 No Background #545
Dark CC 0Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Tasky@2X #668
Dark CC BY-SA 3.0Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Wallpaper Tile 13 #240
Light CC 0An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Fruit on a branch #1969
Dark CC 0From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Mirrored Squares #123
Dark CC BY-SA 3.0Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Dark Brown Leather Texture, Seamless Tile #1092
Leather CC BY-SA 3.0The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Background pattern 277 #2029
Dark CC 0A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Curved Diamond Pattern No Background@2X #537
Diamond CC 0Prismatic Curved Diamond Pattern No Background
Source GDJ
Double Lined #51
Stripes CC BY-SA 3.0Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Stacked Circles #673
Light CC BY-SA 3.0A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Escheresque Dark@2X #1065
Dark CC BY-SA 3.0A comeback for you: the popular Escheresque, now in black.
Source Patten
Overlapping planks 6 #2570
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
45-Degree Fabric #1
Fabric CC BY-SA 3.0Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Seamless Gray Stone Background #1028
Stone CC BY-SA 3.0This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Micro Carbon@2X #8
Carbon CC BY-SA 3.0Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Prismatic Geometric Tessellation Pattern 3 No Background #555
Noise CC 0Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Colorful Floral Background 3 No Black #485
Light CC 0Colorful Floral Background 3 No Black
Source GDJ
Floral pattern 9 #2043
Dark CC 0The tile can be had by selecting the rectangle in Inkscape and using shift+alt+i. Remixed from a drawing in 'Flowers of Song', Frederick Weatherly, 1895.
Source Firkin
French Stucco #697
Paper CC BY-SA 3.0Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Background pattern 234 (colour 4) #2256
Pink CC 0Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Light Gray Fabric Pattern With Faded Stripes #965
Stripes CC BY-SA 3.0A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen