It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Prismatic Geometric Pattern Background No Black
Source GDJ
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:https://jp.pinterest.com/pin/500744052301423641/
Source Yamachem
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall