This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Neat little photography icon pattern.
Source Hossam Elbialy
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
This is a remix of "geometrical pattern 01".
Source Yamachem
A free seamless background with pink spots.
Source V. Hartikainen
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
This is the remix of "Background pattern 115" uploaded by "Firkin".Thanks.
Source Yamachem
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
Prismatic Polka Dots Mark II No Background
Source GDJ
This one has rusty dark brown texture.
Source V. Hartikainen
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
The image depicts the Japanese Edo pattern called "seigaiha" or "青海波" meaning "blue -sea- wave".I hope it's suitable for the summer season.
Source Yamachem
Abstract Tiled Background Extended 12
Source GDJ