If you select an object and then choose a harmony rule in the Color Guide, the selected object will change to the base color of the harmony rule.

Question

Quizplus · Accepted Answer

Choosing a harmony rule in the Color Guide panel in applications like Adobe Illustrator does not automatically change the selected object's color to the base color of the harmony rule; it suggests a range of harmonious colors based on the object's current color.

If You Select an Object and Then Choose a Harmony