An attempt for cleaning up the original image in a few steps.
Source Lazur URH
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Spice up your next school project with this icon background.
Source Swetha
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Prismatic Polka Dots Mark II No Background
Source GDJ
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
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
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Adapted from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin