This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Black brick wall pattern. Brick your site up!
Source Alex Parker
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
A classic dark tile for a bit of vintage darkness.
Source Listvetra
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin