Solid #845
Gray CC BY-SA 3.0A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
More Textures
Background pattern 315 (colour 2) #1844
Red CC 0The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Crossed wood #2583
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Light Orange Brown Wallpaper #911
Stripes CC BY-SA 3.0A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
Inspiration Geometry@2X #1176
Unknow CC BY-SA 3.0This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Background pattern 238 (colour 3) #2227
Blue CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
"Wide Stripe Wallpaper", Seamless Pattern #970
Stripes CC BY-SA 3.0A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Decorative divider 208 #2366
Dark CC 0Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
polka dot seamless pattern #2531
Light CC 0The image depicts polka dot seamless pattern.
Source Yamachem
Classy Fabric #611
Dark CC BY-SA 3.0This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
"Animal Tracks", Background Pattern #1225
Yellow CC BY-SA 3.0A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
polka dot seamless pattern remix 02 #2495
Pink CC 0This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
Grey Washed Wall@2X #1129
Wall CC BY-SA 3.0This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO