garish - showy
Something ‘garish’ is considered excessively and offensively bright or tawdry. It connotes bad taste and something looked down on by others.
The design is a little too garish for my taste. I’d rather come up with something more understated.
Michael turned up to the function wearing a garish yellow suit that made him stick out like a sore thumb.
The garishly decorated rooms of that hotel are very off-putting. They are devoid of class and elegance.