A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
A comeback for you: the popular Escheresque, now in black.
Source Patten
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic