harmonious

US /hɑːrˈmoʊ.ni.əs/
UK /hɑːrˈmoʊ.ni.əs/
"harmonious" picture
1.

forming a pleasing or consistent whole

:
The colors in the painting are very harmonious.
They created a harmonious blend of traditional and modern styles.
2.

free from disagreement or dissent

:
They have a very harmonious relationship.
The team worked together in a harmonious manner.