Background pattern 246 (colour 5) #2182
Colorful CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
More Textures
Square ornament 32 #2433
Dark CC 0Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Background pattern 245 (colour 2) #2191
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Curved Diamond Pattern 8 No Background@2X #550
Dark CC 0Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
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
Background pattern 271 #2058
Dark CC 0Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Red Gemstone Tiles #1223
Red CC BY-SA 3.0This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Project Papper #119
Paper CC BY-SA 3.0Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Mix Stone #1298
Stone CC 0ZeroCC tileable stone texture, edited from pixabay, CC0
Source Sojan Janso
Retina Dust #915
Light CC BY-SA 3.0First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Fabric of Squares #1095
Light CC BY-SA 3.0As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Redox 02 #851
Light CC BY-SA 3.0After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Dark Grunge Texture (Seamless) #1125
Grunge CC BY-SA 3.0Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Background pattern 314 (colour 5) #1835
Pink CC 0The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Gray Sand@2X #18
Dark CC BY-SA 3.0A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Part of Bayeux Tapestry 3 #2448
Noise CC 0From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Crisp Paper Ruffles@2X #842
Light CC BY-SA 3.0Sort of reminds me of those old house wallpapers.
Source Tish
Floral divider 3 #1751
Dark CC 0From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Warped Stripes on Paper #1073
Paper CC BY-SA 3.0A seamless background of warped stripes on paper.
Source V. Hartikainen
Wall #1241
Stone CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso