Here’s a color palette tailored for a modern, energetic, and clean fitness club website UI in dark mode:

json
{
  "palette_name": "Dark Mode Fitness Club",
  "colors": [
    {
      "name": "Primary Green",
      "hex_code": "
          
          #4CAF50
       "
    },
    {
      "name": "Secondary Green",
      "hex_code": "
          
          #388E3C
       "
    },
    {
      "name": "Accent Blue",
      "hex_code": "
          
          #2196F3
       "
    },
    {
      "name": "Background Dark",
      "hex_code": "
          
          #121212
       "
    },
    {
      "name": "Surface/Card Grey",
      "hex_code": "
          
          #1E1E1E
       "
    },
    {
      "name": "Text Primary White",
      "hex_code": "
          
          #FFFFFF
       "
    },
    {
      "name": "Text Secondary Light Grey",
      "hex_code": "
          
          #B0BEC5
       "
    },
    {
      "name": "Button Hover Green",
      "hex_code": "
          
          #66BB6A
       "
    }
  ]
}

This color palette is well-suited for a fitness club website in dark mode. The Primary Green and Secondary Green offer a vibrant feel and are perfect for promoting health and fitness. The Accent Blue provides a fresh pop to the design. The Background Dark and Surface/Card Grey ensure a clean contrast for readability, while the Text Colors provide excellent legibility against the dark background. The Button Hover Green offers a slight lift for interactive elements, enhancing user experience.

Do you need any additional components or adjustments for your fitness club website?