Yeah, there might be a way to make it work by fiddling with color values. Green next to blue can be tough, but it’s not impossible. The trick will be finding a green and blue that are also complimentary and don’t create a pallet that looks like a McDonald’s ball pit.
If you’re new to color theory, do a Google search for color theory / color pallet tools. There are a lot of good ones out there. Adobe has a nice free one.
You might also be able to represent land another way. Like using a shape or illustration instead or color.
That said, as someone who’s been doing this for few decades now and directs some design teams, my advice is to keep symbolism to like 2 or 3 things. One you go over that, it can really be easy to get messy harder to pull off. Just my 2¢.
That said, I like where you’re going with this. Will this be officially adopted by the area?
Green and blue are pretty close to each other on the color spectrum, and they blend together at a distance. I would simplify and remove either the land or the water. They won’t blend into each other, and you still have more than enough symbolism.
The stoke on the wine glass is super smart. I like it. But I agree with the other commenter who recommended unifying the semi circle fill sizes. It simplifies the layout.
I would also pump up the stroke on the wine glass so that is reads a bit better from a distance. Also, that stroke is clever, so play that element up.
I’ll throw a weird one in here. If you want to do any smart home automation stuff, Lutron. Their stuff is famously bulletproof and generally “just works” and almost never needs troubleshooting.
It can be a little pricy for a light switch, but it will work with just about any platform you want to use. Also, all of their wireless switches work without internet.