Color includes basic and mixed ones.
Shade is the intensity of color when switched to greyscale
Color tone is the mixture between colors. There are warm tone, cool tone, bright tone, dark tone, neutral tone, contrast tone, etc. Each tone carries a different visual effect to satisfy the visual needs associated with the function or design concept

For a standard visual color tone, in addition to the color element, the tone element must ensure all 3 shades of Dark - Intermediate - Light