
Lets focus on whiteness. The whiteness is the preference rating for the color of white
objects.
The quality or state of being white.
We call white "white", but clear-headed there
are thousands shades of white.

Nevertheless there is a relationship between the brightness and the yellowness of a white color.
Add a very small amount of a blue pigment to a white pigment and the human
eye appears more white.

Adding a blue pigment to a white pigment the Lightness as well as the yellowness will decrease and in addition the human
eye discovers the shade as more white.

A very clear example: Detergents contain small quantities of blue or bluish-green pigment.
Because of this pigment white laundry appears to be whiter but does this really mean that the laundry is clean?

Bright as the radiating or reflecting much light or luminous or shining. Brightness as the quality of being white.
Often mentioned as clearness or vividness.
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