A comeback for you: the popular Escheresque, now in black.
Source Patten
A bit of scratched up grayness. Always good.
Source Dmitry
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
A version without colours blended together to give a different look.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
White little knobs, coming in at 10x10px. Sweet!
Source Amos
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors