Thank you for the clarification! Here’s a color palette consisting of 21 swatches, focusing primarily on brown and beige shades, while also incorporating three shades each of sage green and complementary red in light, midtone, and dark variations.

json
{
  "palette_name": "Rustic Brown Christmas - Complete",
  "colors": [
    {
      "name": "Light Sage",
      "hex_code": "
                            
                            #C1D1C5
                        "
    },
    {
      "name": "Midtone Sage",
      "hex_code": "
                            
                            #A8BBA1
                        "
    },
    {
      "name": "Dark Sage",
      "hex_code": "
                            
                            #5B7A60
                        "
    },
    {
      "name": "Light Rustic Red",
      "hex_code": "
                            
                            #D77B70
                        "
    },
    {
      "name": "Midtone Rustic Red",
      "hex_code": "
                            
                            #C2523E
                        "
    },
    {
      "name": "Dark Rustic Red",
      "hex_code": "
                            
                            #A63936
                        "
    },
    {
      "name": "Light Beige",
      "hex_code": "
                            
                            #F5E6D8
                        "
    },
    {
      "name": "Medium Beige",
      "hex_code": "
                            
                            #D7CFC4
                        "
    },
    {
      "name": "Dark Beige",
      "hex_code": "
                            
                            #BFA99C
                        "
    },
    {
      "name": "Light Brown",
      "hex_code": "
                            
                            #C8AFA1
                        "
    },
    {
      "name": "Medium Brown",
      "hex_code": "
                            
                            #7C5B4C
                        "
    },
    {
      "name": "Dark Brown",
      "hex_code": "
                            
                            #4E3B31
                        "
    },
    {
      "name": "Chestnut Brown",
      "hex_code": "
                            
                            #5B3A29
                        "
    },
    {
      "name": "Maple Brown",
      "hex_code": "
                            
                            #9C6A54
                        "
    },
    {
      "name": "Cocoa Brown",
      "hex_code": "
                            
                            #4B3D35
                        "
    },
    {
      "name": "Fawn Brown",
      "hex_code": "
                            
                            #C6B29A
                        "
    },
    {
      "name": "Rich Taupe",
      "hex_code": "
                            
                            #7D6C5C
                        "
    },
    {
      "name": "Dark Chocolate",
      "hex_code": "
                            
                            #3B2E25
                        "
    },
    {
      "name": "Vanilla Beige",
      "hex_code": "
                            
                            #E4D1B8
                        "
    },
    {
      "name": "Warm Taupe",
      "hex_code": "
                            
                            #B2A492
                        "
    },
    {
      "name": "Golden Brown",
      "hex_code": "
                            
                            #A67B5D
                        "
    },
    {
      "name": "Rustic Brown",
      "hex_code": "
                            
                            #8B5B4A
                        "
    }
  ]
}

This palette includes three shades each of sage green and rustic red, paired with a variety of brown and beige hues, ensuring a warm and earthy aesthetic suitable for a rustic Christmas theme. Is there anything else you would like to adjust or any specific applications you have in mind for this palette?