Smooth Wall #27
Light CC BY-SA 3.0Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
More Textures
Dark Concrete Wall #1193
Concrete CC BY-SA 3.0A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
Diamond pattern (colour 8) #2273
Red CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Inflicted #117
Grid CC BY-SA 3.0Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Bright Squares #87
Light CC BY-SA 3.0It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Subtle Carbon@2X #950
Dark CC BY-SA 3.0There are many carbon patterns, but this one is tiny.
Source Designova
Diagonal Striped Brick #679
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Polka Dots Mark II No Background@2X #531
Noise CC 0Prismatic Polka Dots Mark II No Background
Source GDJ
Background pattern 302 (colour 2) #1893
Dark CC 0The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Low Contrast Linen@2X #864
Dark CC BY-SA 3.0A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Floral background #1964
Dark CC 0Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Flourish pattern (colour 2) #1738
Red CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Flourish pattern #1736
Dark CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Background pattern 289 (colour 2) #1936
Red CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Blue Stripes Pattern #969
Stripes CC BY-SA 3.0A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Argyle@2X #644
Dark CC BY-SA 3.0Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
"Polished Blue Stone", Seamless Web Texture #1052
Stone CC BY-SA 3.0An abstract web texture of a polished blue stone (or does it look more like ice).
Source V. Hartikainen