The base gradient edited so now more details are rendered.
Source Lazur URH
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Almost like little fish shells, or dragon skin.
Source Graphiste
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers