Colour

Hue
 Dominant colour of object that is red, yellow, Grey
 Vita guide A red, B yellow, C Grey, D r y z equal mix

Chroma
 Degree of saturation
 that is intensity example less intensity at incisal third whereas high Chroma at
cervical 3rd

Value
 Lightness and darkness
 most important parameter
 Eg. A1,A2, A3, etc

SEQUENCE OF SHADE SELECTION
Value >>>> Chroma >>>>>> Hue

Q. When new colour other than red, yellow, grey are added - change in hue
Q. When any of these three above colours are added - change in Chroma