warmth

noun4

1. •
   A moderate degree of heat; the sensation of being warm.
2. •
   Friendliness, kindness or affection.
3. •
   Fervor, intensity of emotion or expression.

   • "You don't know him—don't pronounce an opinion upon him," I said with warmth. — 1847
4. •
   The effect of using mostly red and yellow hues.