Low Contrast Linen #863
Dark CC BY-SA 3.0A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
More Textures
Floral design 91 #1814
Dark CC 0From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Tileable Wood #655
Wood CC BY-SA 3.0Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Decorative divider 250 #2070
Dark CC 0Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
Psychedelic Geometric Background No Black #382
Noise CC 0Psychedelic Geometric Background No Black
Source GDJ
Square ornament 26 #2590
Dark CC 0Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Grid #974
Gray CC BY-SA 3.0There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Dark Blue Gray Wallpaper Texture #901
Stripes CC BY-SA 3.0This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
Decorative divider 279 #1889
Dark CC 0Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
Mix Stone #1263
Stone CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Blue on White Background Pattern #993
Stripes CC BY-SA 3.0A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Retro Intro@2X #894
Gray CC BY-SA 3.0A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Seamless Blue On Yellow Background #1160
Grid CC BY-SA 3.0This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Prismatic Polka Dots Mark II 2 No Background@2X #533
Noise CC 0Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Blue & Dark Well #1703
Wall CC 0Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Cover Pink #1284
Pink CC 0Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
Tex2res5 #725
Fabric CC BY-SA 3.0Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Through Pixel Dream #1228
Yellow CC BY-SA 3.0A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
Stucco #294
Wall CC BY-SA 3.0A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Floral design 97 #1778
Yellow CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Escheresque@2X #778
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus