late, quiet, sets (sun)
晏 centers on the late, quiet time when the sun sets and the day winds down. The meanings 'late', 'quiet', and 'sets (sun)' all describe this calm evening atmosphere.
晏 combines 日 (sun) with 安 (peaceful, calm), suggesting the peaceful time when the sun sets and the day becomes quiet and late.
The sun 日 rests above 安 (peace), like a calm sunset bringing a quiet, late evening.
For アン, picture an ant (アント) settling down for the night as the sun sets late and quiet: ant -> アン.