Here are the color palettes based on your queries:

 <Black & Cool Gray Theme>
1. Black - 
                            
                            #000000
                         - A deep, rich black that serves as a strong foundation for the design.
2. Cool Gray - 
                            
                            #F2F2F2
                         - A soft, light gray that provides a subtle contrast to black, creating a clean and modern look.
3. Slate Blue - 
                            
                            #5A67D8
                         - A calming blue with a hint of gray, perfect for accents and adding depth.
4. Soft Mint - 
                            
                            #CFF4E6
                         - A gentle mint green that brings a refreshing touch to the palette.
5. Bold Cyan - 
                            
                            #17E9E0
                         - A vibrant cyan that stands out for call-to-action buttons, drawing immediate attention.

 <Deep Blue & Navy Theme>
1. Deep Blue - 
                            
                            #1E2A38
                         - A dark, sophisticated blue that establishes a strong visual presence.
2. Navy - 
                            
                            #253E59
                         - A classic navy that complements the deep blue and adds richness to the design.
3. Vibrant Teal - 
                            
                            #20C3AF
                         - A lively teal that adds a pop of color and energy to the palette.
4. Light Gray - 
                            
                            #E4E7EB
                         - A soft light gray that balances the darker tones and enhances readability.
5. Neon Green - 
                            
                            #00FF85
                         - An eye-catching neon green that is perfect for call-to-action buttons, ensuring they stand out.

 <Dark Gray & Charcoal Theme>
1. Dark Gray - 
                            
                            #333333
                         - A bold gray that serves as a strong base, providing an elegant backdrop.
2. Cool Charcoal - 
                            
                            #555B6E
                         - A medium charcoal that adds depth and contrast to the design.
3. Electric Blue - 
                            
                            #007AFF
                         - A bright blue that introduces an energetic vibe, ideal for accents.
4. Bright Yellow - 
                            
                            #FFD300
                         - A sunny yellow that adds cheerful highlights and draws attention.
5. Bright Orange - 
                            
                            #FF6F00
                         - A warm and vibrant orange that energizes call-to-action buttons and key features.

These color palettes combine a variety of tones, ensuring a balance between sophistication and vibrancy.

What specific applications or design projects do you have in mind for these palettes? Would you like suggestions on how to effectively use these colors in your designs?