What colleges would be realistic for me? 3.8 GPA, 4.0 UC GPA, and 32 ACT

Freshman admit rates (2016) for UC GPA of 3.80-4.19:

UCB: 14%
UCLA: 14%
UCSD: 44%
UCSB: 54%
UCD: 58%
UCI: 65%
UCSC: 85%
UCR: 94%
UCM: 96%

You have competitive stats for the majority of the UC’s. UCLA/UCB are Reaches but have you good EC’s. Write some compelling essays and any of the top UC’s are possible. Apply widely especially if you are pursuing a competitive major.

Best of luck.