Fabric pattern 2 (colour 5) #2392
Fabric CC 0Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More Textures
Blizzard #663
Paper CC BY-SA 3.0This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Star pattern #2410
Brown CC 0A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Light Aluminum #304
Wall CC BY-SA 3.0Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
Decorative divider 184 #2589
Dark CC 0From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Background pattern 226 (colour 5) #2317
Blue CC 0A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Background pattern 272 #2057
Brown CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Stone Granite #1292
Stone CC 0ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
Connected #348
Light CC BY-SA 3.0White circles connecting on a light gray background.
Source Mark Collins
Decorative divider 236 #2090
Dark CC 0From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Transparent Square Tiles #298
Grid CC BY-SA 3.0The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Washi #288
Light CC BY-SA 3.0Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Diagonal Striped Brick #679
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
Repeating Vintage Paper Background #1077
Paper CC BY-SA 3.0A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Floral pattern 7 (colour 6) #2286
Brown CC 0Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Dark Dot #647
Dark CC BY-SA 3.0That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Use Your Illusion #917
Dark CC BY-SA 3.0A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Seamless Green Tile Background #1326
Green CC BY-SA 3.0Seamless Green Tile Background
Source V. Hartikainen
Eight Horns #1325
Light CC BY-SA 3.0Looks like an old rug or a computer chip.
Source Patutin Sergey
Mooning@2X #1141
Gray CC BY-SA 3.0The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Background Patterns Lazuli #253
Fabric CC 0If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Rough Cloth@2X #313
Fabric CC BY-SA 3.0More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski