How can I change background color of rendered scene?

To every one in this forum

How do you do?

When I press F12 to render a scene, background is dark-blue color.

How can I change this background color to light gray?

Any comments are appreciated.

Sincerely yours.

World Options:-

Update -

To organic

Thank you for your reply.
I can now change the background of rendered scene.

Sincerely yours.

From akd23x