There are many carbon patterns, but this one is tiny.
Source Designova
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
The original enhanced with some gradients.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
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
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Prismatic Abstract Geometric Background 5
Source GDJ