I try my best to not dress up very often. Going to a function tomorrow night that says “jackets encouraged”. I’ve had a navy blazer that has the bright gold buttons for several years. Is this totally out of style to wear with khakis or would I be ok? I am horrible with keeping up with trends so I’m hoping someone has some insight for me.

A little dated and casual-ish. Its more of a daytime jacket.

Either way, if it doesn't fit really well you're probably gonna look a little goofy, TBH.

That’s exactly what I needed to know. Thank you!

Probably depends where you live.

Run by a department store and see what they're currently selling?

SPAULDING GET YOUR FOOT OFF THE BOAT!

This is correct

WHAT IS A BLAZER?
A blazer is defined by its solid color and metal buttons. Oftentimes, those buttons feature a nautical motif as the blazer dates back to the 19th century when Britain’s Royal Navy standardized its uniform to feature a simple navy jacket.

Historically, a blazer was a sign of membership in a group. The term, blazer is attributed to the “blazing red” jackets worn by Cambridge’s Lady Margaret Boat Club. They served as a status symbol as rowers began wearing their blazers on dry land and around colleges.

In today’s terms, the blazer is most always a solid color—with blue or black being the most common, adding to their formality. Typically bedecked with silver, gold, or brass metal buttons, the blazer is the perfect option for events that used to be black tie or formal.

The navy blazer serves as an essential “go-to” in a well-dressed man’s wardrobe.

If it fits it works, but I’d suggest lightweight grey trousers. Or earth tone chinos depending on your age. The grey is good for all.

Pretty standard in every gentleman's closet in the south.