How can I get this super eye-catching color?

I'm having trouble creating this multi-colored view. It seems like my current skill level isn't enough to get the result I want. I really want to learn, but I'm not sure how to get this specific color scheme.

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  • The bars you are pointing to are nearly saturated magenta, roughly #ff64ff. However, they also have a bit of linear gradient on them to give them the tube shape, and a magenta "shadow" to give them glow effect. How to get them would be very dependent on the system you are using to draw them.