Based on your request for a subdued and delicate color palette with at least 13 colors, I’ve created a complementary palette that builds upon the colors you’ve provided. Here’s the color palette:

json
{
  "palette_name": "Delicate Subdued Shades",
  "colors": [
    {
      "name": "Light Gray",
      "hex_code": "
          
          #F0F0F0
       "
    },
    {
      "name": "Soft Blue",
      "hex_code": "
          
          #9090C0
       "
    },
    {
      "name": "Muted Rose",
      "hex_code": "
          
          #C03060
       "
    },
    {
      "name": "Teal Green",
      "hex_code": "
          
          #609090
       "
    },
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #3090C0
       "
    },
    {
      "name": "Pale Lavender",
      "hex_code": "
          
          #D0C0E0
       "
    },
    {
      "name": "Dusty Olive",
      "hex_code": "
          
          #A0A080
       "
    },
    {
      "name": "Soft Peach",
      "hex_code": "
          
          #F0C0B0
       "
    },
    {
      "name": "Muted Coral",
      "hex_code": "
          
          #C06050
       "
    },
    {
      "name": "Light Sage",
      "hex_code": "
          
          #B0C0B0
       "
    },
    {
      "name": "Powder Blue",
      "hex_code": "
          
          #A0C0E0
       "
    },
    {
      "name": "Warm Beige",
      "hex_code": "
          
          #E0C8B0
       "
    },
    {
      "name": "Gentle Mauve",
      "hex_code": "
          
          #D0A0C0
       "
    }
  ]
}

This palette consists of softer and more subdued shades, ideal for marking shapes on a simple area map while keeping it visually appealing and harmonious.

Would you like to adjust any specific colors, or do you need help with anything else?