Tonal Progression – Tonal progression is a succession of color mixtures proceeding from dark to light. In addition to value change, tonal progressions also vary in hue and chromatic intensity. www.theryderstudio.com

A series of color combinations in order from lightest to darkest.

Shade – The mixture of a color with black, which reduces lightness. https://en.wikipedia.org

Any color mixed with black.

Tint – a mixture of a color with white, which increases lightness. https://en.wikipedia.org

The opposite of a shade.

Tone – tone refers to the degree of lightness or darkness of an area. https://www.thoughtco.com

A measure of lightness or darkness.

Venn diagram – an illustration of the relationships between and among sets, groups of objects that share something in common. whatis.techtarget.com/definition/Venn-diagram

Diagram used to show relationships between sets.