Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
Alternative colour scheme to the original.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
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
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.
Source Yamachem
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin