Diagonal Striped Brick@2X #680
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
More Textures
Background pattern 332 (version 2) #1740
Blue CC 0The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Batthern@2X #325
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Decorative divider #2001
Dark CC 0From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.
Source Firkin
Subtle Surface #925
Light CC BY-SA 3.0Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Background pattern 257 (colour) #2136
Green CC 0Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Floral design 108 #1706
Dark CC 0Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Background pattern 309 (colour 3) #1864
Red CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Diagonal Striped Brick@2X #680
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
Church #633
Paper CC BY-SA 3.0I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Clover with background #237
Paper CC 0Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
Arches #715
Light CC BY-SA 3.0One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
White Bed Sheet@2X #822
Light CC BY-SA 3.0Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Subtle Dark Vertical #607
Dark CC BY-SA 3.0Classic vertical lines, in all its subtlety.
Source Cody L
Prismatic Snowflakes Pattern 2 No Background #412
Light CC 0Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Background pattern 252 (colour 2) #2156
Brown CC 0Recreated 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.
Source Firkin
Blizzard #663
Paper CC BY-SA 3.0This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Tessellation 16 (colour 3) #2213
Green CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Floral design 71 #2429
Dark CC 0From a drawing in 'From Snowdon to the Sea. Striking stories of North and South Wales', Marie Trevelyan, 1895.
Source Firkin
Type #276
Dark CC BY-SA 3.0The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Robots@2X #126
Dark CC BY-SA 3.0And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Background pattern 245 #2192
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin