You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A new take on the black linen pattern. Softer this time.
Source Atle Mo
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
From a drawing in 'Worsborough; its historical associations and rural attractions', Joseph Wilkinson, 1879.
Source Firkin
Spice up your next school project with this icon background.
Source Swetha
Prismatic Abstract Line Art Pattern Background
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Prismatic Hexagonalism Pattern No Background
Source GDJ
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim