Light Aluminum #304
Wall CC BY-SA 3.0Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
More Textures
Decorative divider 185 #2588
Orange CC 0From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
Background pattern 215 (colour 3) #2369
Pink CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Fruit on a branch #1968
Dark CC 0From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Background pattern 245 (colour 4) #2189
Yellow CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
"Glossy Pink Fur", Pink Background Pattern #1235
Pink CC BY-SA 3.0Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
Striped Fabric Pattern #998
Stripes CC BY-SA 3.0A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
Black Scales #191
Dark CC BY-SA 3.0Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Textured Red Brown Plastic #878
Wood CC BY-SA 3.0Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
Wallpaper Tile 13 #240
Light CC 0An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Axiom Pattern@2X #331
Grid CC BY-SA 3.0Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
crissXcross #111
Dark CC BY-SA 3.0Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Wavy background #2012
Green CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Flourish pattern #1736
Dark CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Skewed Print #819
Dark CC BY-SA 3.0An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Visual illusion #2586
Grid CC 0The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Decorative divider 250 #2070
Dark CC 0Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
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
Prismatic Abstract Geometric Background 4 No Black@2X@2X #444
Dark CC 0Prismatic Abstract Geometric Background 4
Source GDJ
Floral design 71 #2429
Dark CC 0From a drawing in 'From Snowdon to the Sea. Striking stories of North and South Wales', Marie Trevelyan, 1895.
Source Firkin
Stripy checkerboard pattern 2 #1767
Dark CC 0Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Blue on White Background Pattern #993
Stripes CC BY-SA 3.0A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Fabric pattern (colour 3) #2400
Fabric CC 0Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin