garish
/ˈɡɛəɹɪʃ/adjective
Too bright or flashy in a way that looks cheap or tasteless.
Example sentence
- “The hotel lobby was decorated in garish gold and neon pink.”
Aimed mostly at colors, lights, clothing, and decor. It condemns brightness specifically; 'gaudy' adds cheap ornament, 'lurid' adds a sensational glow.