Just like the black maze, only in light gray. Duh.
Source Peax
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Prismatic Groovy Concentric Background
Source GDJ
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Prismatic Triangular Background Design Mark II 5
Source GDJ
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Just a nice looking textured pattern with faded blue stripes. Well, that's it for today... one background a day, as usual.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin