Here is a color palette based on your request for dark petrol, russet, pine, and sand.

json
{
  "palette_name": "Earthy Tones",
  "colors": [
    {
      "name": "Dark Petrol",
      "hex_code": "
                            
                            #005B5C
                        "
    },
    {
      "name": "Russet",
      "hex_code": "
                            
                            #7B4B3A
                        "
    },
    {
      "name": "Pine",
      "hex_code": "
                            
                            #2A4B2D
                        "
    },
    {
      "name": "Sand",
      "hex_code": "
                            
                            #D9CBAE
                        "
    }
  ]
}

This palette combines deep, rich tones with earthy shades, creating a harmonious and nature-inspired look. Would you like to explore more colors or different combinations?