Here are some historical oil paintings exemplifying chromatic greys in high-key value and low-key value ranges.

Claude Monet, Ice Floes, 1893

Claude Monet, Waterloo Bridge, 1903

David Milne, From the Doorway, Alander Cabin, 1928

Leslie Reid, Pontiac II, 1978

J.E.H. MacDonald, Trucks and Traffic, 1913

J.E.H. MacDonald, Early Evening Winter, 1912

Charles W. Jefferys, Dark Woods, 1913

Peggy Nicol Macleod, Bank Street Bridge, 1930