A seamless paper background colored in pale yellow.
Source V. Hartikainen
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Fix side and a seamless pattern formed from circles.
Source SliverKnight
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
Prismatic Geometric Pattern Background No Black
Source GDJ
Original seamless pattern with an Inkscape filter.
Source Firkin
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
The name is totally random, but hey, it sounds good.
Source Atle Mo
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Similar to original, but without gaps in between the arrows. This seamless pattern was created from a rectangular tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
Might not be super subtle, but quite original in its form.
Source Alex Smith
Run a restaurant blog? Here you go. Done.
Source Andrijana Jarnjak
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media