A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
A version without colours blended together to give a different look.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
The image is a design of blue glass.How about using it as background image?
Source Yamachem
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
An alternative colour scheme for the original seamless texture formed from an image on Pixabay.
Source Firkin
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen