I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Prismatic Triangular Background Design Mark II 5
Source GDJ
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
The name is totally random, but hey, it sounds good.
Source Atle Mo
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
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
A chequerboard pattern with a fruit theme. The fruits are from a posting by inkscapeforum.it.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Prismatic Groovy Concentric Background
Source GDJ
Might not be super subtle, but quite original in its form.
Source Alex Smith
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin