Low key as a term used in describing paintings or photographs is related to but not the same as low-key lighting in cinema or photography.[1] A photographic image, painting or movie can be defined as "low-keyly" if its dominant values are black, dark brown or dark blue.[2][3]
Some authors describe the term "low key" as the so-called Rembrandian light[4] while others describe how to obtain such photographs or paintings.[5]