This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern formed from miutopia mug remixes on a tablecloth.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Kaleidoscope Prismatic Abstract No Background
Source GDJ