Final answer:
The hue of a thing under most common lighting conditions is known as the true color. The true color of an object is defined by its absorptive or reflective characteristics. Color constancy is the ability of the eye-brain system to perceive the true color of an object under different lighting conditions.
Step-by-step explanation:
The hue of a thing under most common lighting conditions is known as the true color. The true color of an object is defined by its absorptive or reflective characteristics, which determine the wavelengths of light it absorbs or reflects. The color of a light source is determined by the wavelengths of light it emits.
Our eye-brain system has the ability to perceive the true color of an object under different lighting conditions, a phenomenon known as color constancy.