mellowness

The property of a sensation that is rich and pleasing.

“the cheap wine had no body, no mellowness”

A feeling of good humor and sympathy through maturity or intoxication or a relaxed state.

A soft shade of a color.

“a mellowness of light and shade not attainable in marble”

A taste (especially of fruit) that is ripe and of full flavor.

Geniality, as through the effects of alcohol or marijuana.