color of the wheel is a "tone". Contiguous wheel tones, that
share the same sub-tones (e.g. red,
orange red, orange) are harmonic.
wheel tones (e.g.
green ) are
opposed tones. Used together, they produce contrast.
combinations of colors placed at the vertices of the triangle,
that involve three tones equally distant (e.g. red,
) are combined in a vivid and contrasting mode. The triangle
can be rotated to find other combinations.