Here is a color palette based on your request for a degradation from red to brown, along with a contrasting color to red:

json
{
  "palette_name": "Red to Brown Degradation",
  "colors": [
    {
      "name": "Bright Red",
      "hex_code": "
                            
                            #FF0000
                        "
    },
    {
      "name": "Crimson",
      "hex_code": "
                            
                            #DC143C
                        "
    },
    {
      "name": "Firebrick",
      "hex_code": "
                            
                            #B22222
                        "
    },
    {
      "name": "Indian Red",
      "hex_code": "
                            
                            #CD5C5C
                        "
    },
    {
      "name": "Brown",
      "hex_code": "
                            
                            #A52A2A
                        "
    },
    {
      "name": "Dark Brown",
      "hex_code": "
                            
                            #8B4513
                        "
    },
    {
      "name": "Green",
      "hex_code": "
                            
                            #008000
                        "
    }
  ]
}

This palette transitions smoothly from bright red to dark brown, with a contrasting green color that provides a vibrant contrast to the red hues.

Would you like to explore more palettes or have any specific applications in mind for these colors?