Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Classic 45-degree pattern, light version.
Source Luke McDonald
A white version of the very popular linen pattern.
Source Ant Ekşiler
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Might not be super subtle, but quite original in its form.
Source Alex Smith
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
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
Embossed lines and squares with subtle highlights.
Source Alex Parker
This background texture resembles stone. It may be used as a background on web pages or on some of their html elements (header, borders, menu bar, etc.). Just modify it for your needs.
Source V. Hartikainen
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim