Dark Mosaic@2X #122
Dark CC BY-SA 3.0Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
More Textures
Prismatic Abstract Line Art Pattern Background 2@2X #568
Dark CC 0Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Background pattern 234 (colour 3) #2257
Blue CC 0Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Grunge Wall@2X #82
Wall CC BY-SA 3.0Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Prismatic Abstract Geometric Background 2 No Black #445
Noise CC 0Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Weave #733
Wall CC BY-SA 3.0Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Diagonal Striped Brick #679
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
Graphy #350
Grid CC BY-SA 3.0Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Graphene pattern 2 #2234
Dark CC 0Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Dark Mosaic@2X #122
Dark CC BY-SA 3.0Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Background pattern 10 #216
Noise CC 0A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Natural Paper@2X #834
Paper CC BY-SA 3.0You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Brick Wall@2X #1147
Wall CC BY-SA 3.0One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Medic Packaging Foil #376
Light CC BY-SA 3.08 by 8 pixels, and just what the title says.
Source pixilated
Inflicted #117
Grid CC BY-SA 3.0Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Polonez Pattern@2X #335
Gray CC BY-SA 3.0A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Background pattern 227 (colour 3) #2312
Pink CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Black Mamba@2X #58
Dark CC BY-SA 3.0The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Fake Luxury@2X #622
Diamond CC BY-SA 3.0Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Page ornament #1988
Dark CC 0From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Subtle Surface@2X #926
Light CC BY-SA 3.0Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Spotty Pink Background (Seamless) #1236
Pink CC BY-SA 3.0A free seamless background with pink spots.
Source V. Hartikainen
Snowflake pattern remix #156
Dark CC 0The base gradient edited so now more details are rendered.
Source Lazur URH
Prismatic Abstract Background Design #403
Noise CC 0Prismatic Abstract Background Design
Source GDJ