This was formed by distorting an image of a background on Pixabay.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Floral Background No Black
Source GDJ
Prismatic Hexagonalist Pattern No Background
Source GDJ
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
The image depicts polka dot seamless pattern.
Source Yamachem
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Colorful Floral Background 3 No Black
Source GDJ