Baiyansè

Quick answer：

Baiyansè, also known as 'ash white', is a pale, light gray color. It is often associated with the color of smoke, particularly from fires or industrial emissions. In various contexts, it can have different shades, from a light, almost white color to a darker, more grayish hue. The term is used in color theory, design, and everyday language to describe a specific shade of gray.