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
More Textures
Subtle Dark Vertical@2X #608
Dark CC BY-SA 3.0Classic vertical lines, in all its subtlety.
Source Cody L
Tessellation 16 (colour 5) #2211
Yellow CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Crackled Cement Wall #1270
Wall CC 0Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Smooth Wall@2X #28
Light CC BY-SA 3.0Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Flourish decorative divider #1732
Dark CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Green and Yellow Lines on White Background #1000
Stripes CC BY-SA 3.0A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Floral design 99 (colour) #1777
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Square ornament 26 #2590
Dark CC 0Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Dirty #1372
Green CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Dimension@2X #1174
Light CC BY-SA 3.0Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Corrugation #765
Light CC BY-SA 3.0The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Decorative divider 201 #2421
Dark CC 0From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Rough Cloth@2X #313
Fabric CC BY-SA 3.0More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Prismatic Geometric Pattern Background 2 No Black #410
Noise CC 0Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Prismatic Snowflakes Pattern 2 No Background #412
Light CC 0Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Transparent Square Tiles@2X #299
Grid CC BY-SA 3.0The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Cincinnati tablet 2 #2146
Dark CC 0Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin
Decorative divider 288 #1820
Dark CC 0From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Wall #4 Light #779
Wall CC BY-SA 3.0I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Merely Cubed #589
Grid CC BY-SA 3.0Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Dark Concrete Wall #1193
Concrete CC BY-SA 3.0A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
Prismatic Groovy Concentric Background No Black #451
Noise CC 0Prismatic Groovy Concentric Background No Black
Source GDJ