Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Vertical lines with a bumpy, yet crisp, feel to it.
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Inspired by a design seen on Pixabay
A seamless texture traced from an image on opengameart.org shared by Scouser.
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A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Formed by distorting a JPG from PublicDomainPictures
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
CC0 textures, backgrounds.
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
1280 x 800 px
Retro Squares Background 5
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Prismatic Curved Diamond Pattern 3 No Background
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
And finally, number 6. Enjoy.
Source Dima Shiper
Vector version of a png that was uploaded to Pixabay by pencilparker
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Prismatic Geometric Tessellation Pattern 3 No Background
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Prismatic Hypnotic Pattern 2 No Background
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
Metal-Rusty. CC0 License.
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Paper-Wallpaper. CC0 License.