Royalty-Free Rules Photos, dominant color: gray, sorted by aesthetic score

6016x4016

selective focus photography of red pencil on carpenter's ruler

Public Domain
3072x2048

gold-colored ring on top white paper

Public Domain
4608x3072

blue ballpoint pen on white ruled notebook

Public Domain
4608x3456

man wearing white dress shirt holding chalkboard

Public Domain
5184x3456

Wall St post in rule of thirds photography during daytime

Public Domain
5232x2520

silver fountain pen drew a heart in white ruled paper

Public Domain
1280x853

no jumping off bridge signboard

Public Domain