The image is a design of blue glass.How about using it as background image?
Source Yamachem
Remixed from a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Prismatic Geometric Pattern Background
Source GDJ
Fix side and a seamless pattern formed from circles.
Source SliverKnight
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo