HueHive

1. Olive Green - #4F5B31 - A muted, earthy green that symbolizes growth and stability, perfect for representing financial security.

2. Deep Blue - #003B5C - A rich, dark blue that conveys trust and professionalism, commonly associated with the financial sector.

3. Golden Yellow - #FFC107 - A bright, warm yellow that signifies wealth and prosperity, reminiscent of gold, an essential element in the world of currency.

4. Silver Grey - #C0C0C0 - A sleek, modern grey that adds a touch of sophistication and neutrality, often associated with technology and innovation.

This color palette combines earthy tones with a mix of professional and luxurious colors, reflecting the themes of trust, growth, and wealth commonly associated with cryptocurrency.

Would you like to explore specific design elements for your banner, or do you need suggestions for layout and typography?