As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Gold Triangular Seamless Pattern No Background
Source GDJ
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Black And White Floral Pattern Background Inverse
Source GDJ
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem
This one needs to be used in small areas; you can see it repeat.
Source Luca
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Prismatic Abstract Geometric Background 5
Source GDJ
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.
Source Firkin
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin