Color images dominated by brightness typically refer to photographs or images where the shades of colors are more influenced by their lightness or darkness rather than their hue or saturation. This can be achieved through various photographic techniques, such as adjusting the exposure settings to enhance or soften contrasts, or through digital editing to alter the color's luminance. Such images often convey a sense of mood or atmosphere, with lighter shades typically associated with calmness or brightness, and darker shades with depth or seriousness.