Prismatic Groovy Concentric Background 3@2X #458
Noise CC 0Prismatic Groovy Concentric Background 3
Source GDJ
More Textures
Abstract Arbitrary Geometric Background@2X #498
Noise CC 0Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Polonez Pattern #334
Gray CC BY-SA 3.0A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Wide Rectangles@2X #700
Wall CC BY-SA 3.0Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Sewn Stripes Pattern #964
Stripes CC BY-SA 3.0A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
Gray Lines@2X #914
Light CC BY-SA 3.0Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Random Grey Variations@2X #70
Stripes CC BY-SA 3.0Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Smooth Wall #27
Light CC BY-SA 3.0Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Fabric Pattern with Stitch Holes #1163
Fabric CC BY-SA 3.0A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
Background pattern 215 (colour 2) #2370
Blue CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
P4 #1111
Light CC BY-SA 3.0I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Finery #1370
Wall CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Background pattern 227 #2314
Yellow CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Diagonal Striped Brick #679
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Curved Diamond Pattern 2 No Background #538
Diamond CC 0Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
"Beige Wall", Tileable Background #1189
Concrete CC BY-SA 3.0This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
Handmade Paper@2X #38
Paper CC BY-SA 3.0White handmade paper pattern with small bumps.
Source Marquis
Background pattern 246 (colour 5) #2182
Colorful CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
"Dark Metal Plate", Web Background #1084
Metal CC BY-SA 3.0A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
Background pattern yellow #1999
Yellow CC 0Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin