clear, bright
奐 centers on clarity and brightness, like a scene that is well-lit and easy to see. The given meanings of clear and bright both point to this idea of unobstructed visibility.
奐 is thought to combine a top element related to a person or head with 大 (big), possibly suggesting a person standing out clearly or a bright, expansive appearance. The exact historical development is uncertain.
The top ⺈ looks like a person bending over, and 大 is a big person. Imagine a big person standing under a bright light, making everything clear and bright.
For カン, picture a bright can of light: can -> カン, and the can shines clearly.
grand and splendid building