Here's why:
* Melanin: Hair color is determined by the amount and type of melanin pigment. Black hair has the most melanin, while blonde hair has the least. Grey hair occurs when melanin production decreases, meaning it's closer to blonde in terms of pigment.
* Reflectance: Grey hair reflects more light than black hair, giving it a lighter appearance.
While some people might perceive grey hair as closer to black because of its lack of color, it's actually closer to the blonde side of the spectrum due to its lower melanin content.