- HueInterval
 interval of hues in the hue chart defining the elementary block
 
    - Hmin
 minimum ASTM D1535 Hue for the elementary block
 
    - Hmax
 maximum ASTM D1535 Hue for the elementary block
 
    - Vmin
 minimum Value for the elementary block
 
    - Vmax
 maximum Value for the elementary block
 
    - Cmin
 minimum Chroma for the elementary block
 
    - Cmax
 maximum Chroma for the elementary block. Cmax=Inf for some elementary blocks.
 
    - Number
 color number of the elementary block, from 1 to 267