Cardboard@2X #279
Paper CC BY-SA 3.0A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
More Textures
Gloomy Stripes #994
Stripes CC BY-SA 3.0A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
Green Subtle Web Texture #1334
Green CC BY-SA 3.0A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
Blizzard@2X #664
Paper CC BY-SA 3.0This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Page ornament #1992
Dark CC 0Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Background pattern black #2026
Dark CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Strawberry pattern #1795
Red CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Contemporary China 2 #1338
Light CC BY-SA 3.0Old China with a modern twist, take two.
Source Adam Charlts
Abstract Tiled Background Extended 8 #519
Noise CC 0Abstract Tiled Background Extended 8
Source GDJ
Colourful background 14 (colour 2) #2525
Colorful CC 0An alternative colour scheme for the original background.
Source Firkin
Fabric pattern (colour 2) #2401
Fabric CC 0Alternative colour scheme. Not 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
Background pattern 215 #2371
Brown CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Flourish pattern #1736
Dark CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Checkered Pattern@2X #323
Grid CC BY-SA 3.0Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Prismatic Hypnotic Pattern No Background@2X #572
Noise CC 0Prismatic Hypnotic Pattern No Background
Source GDJ
Satin Weave #1044
Light CC BY-SA 3.0Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Wavy background #2018
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Prismatic Curved Diamond Pattern 8 No Background@2X #550
Dark CC 0Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
White Well & Fissure #1701
Wall CC 0Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
Background pattern 238 #2229
Red CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background pattern #1963
Dark CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Graphy #350
Grid CC BY-SA 3.0Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Natural Paper@2X #834
Paper CC BY-SA 3.0You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Wavy background #2019
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Fake Luxury #621
Diamond CC BY-SA 3.0Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Background Patterns - Crimson #250
Fabric CC 0If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Background pattern purple #1946
Colorful CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin