Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Here's a bluish gray striped background pattern for use on web sites.
Source V. Hartikainen
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
This background image is great for using in web design or graphic design projects. And don't forget to visit the homepage. I frequently update this resource with fresh tileable backgrounds.
Source V. Hartikainen
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Green Web Background, Seamless tile.
Source V. Hartikainen
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen