This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Prismatic Snowflakes Pattern No Background
Source GDJ
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Almost like little fish shells, or dragon skin.
Source Graphiste
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
This is the remix of "plant pattern 02".I changed the object color to white and the BG to purple.The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:jp.pinterest.com/pin/500744052301423641/
Source Yamachem
Prismatic Groovy Concentric Background 4
Source GDJ
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry