This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
The tile this is based on was adapted from an image that was uploaded to Pixabay by frolicsomepl. It can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:https://jp.pinterest.com/pin/500744052301423641/
Source Yamachem
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba