Here is the updated color palette, now including a dark color that complements the specified colors:

json
{
  "palette_name": "Shades of Selected Colors with Dark Accent",
  "colors": [
    {
      "name": "Shade 1 - Red",
      "hex_code": "
                            
                            #A82828
                        "
    },
    {
      "name": "Shade 2 - Red",
      "hex_code": "
                            
                            #D94B4B
                        "
    },
    {
      "name": "Shade 1 - Brown",
      "hex_code": "
                            
                            #9A5B3E
                        "
    },
    {
      "name": "Shade 2 - Brown",
      "hex_code": "
                            
                            #BB8A6B
                        "
    },
    {
      "name": "Shade 1 - Olive",
      "hex_code": "
                            
                            #686E45
                        "
    },
    {
      "name": "Shade 2 - Olive",
      "hex_code": "
                            
                            #A3A95A
                        "
    },
    {
      "name": "Shade 1 - Blue",
      "hex_code": "
                            
                            #4E4D7A
                        "
    },
    {
      "name": "Shade 2 - Blue",
      "hex_code": "
                            
                            #7C7DA0
                        "
    },
    {
      "name": "Shade 1 - Teal",
      "hex_code": "
                            
                            #247272
                        "
    },
    {
      "name": "Shade 2 - Teal",
      "hex_code": "
                            
                            #4D9999
                        "
    },
    {
      "name": "Dark Accent Color",
      "hex_code": "
                            
                            #1A1A1A
                        "
    }
  ]
}

The dark accent color ( #1A1A1A ) provides a strong contrast to the lighter shades and can be effectively used for text or backgrounds to enhance visibility and depth.

Would you like to see how these colors work together in a specific context, such as a website design or branding?