Here is a pastel color palette suitable for your architecture spreadsheet:

json
{
  "palette_name": "Pastel Architecture",
  "colors": [
    {
      "name": "Pastel Blue",
      "hex_code": "
          
          #A7C6ED
       "
    },
    {
      "name": "Pastel Green",
      "hex_code": "
          
          #A8E5A1
       "
    },
    {
      "name": "Pastel Pink",
      "hex_code": "
          
          #F4B6C2
       "
    },
    {
      "name": "Pastel Yellow",
      "hex_code": "
          
          #F6EBA8
       "
    },
    {
      "name": "Pastel Lavender",
      "hex_code": "
          
          #D7C9E2
       "
    },
    {
      "name": "Pastel Peach",
      "hex_code": "
          
          #F2C2B8
       "
    },
    {
      "name": "Pastel Mint",
      "hex_code": "
          
          #C6EBC9
       "
    },
    {
      "name": "Pastel Coral",
      "hex_code": "
          
          #FFB3A0
       "
    },
    {
      "name": "Pastel Sky",
      "hex_code": "
          
          #B4D7F4
       "
    },
    {
      "name": "Pastel Lemon",
      "hex_code": "
          
          #F9E79F
       "
    },
    {
      "name": "Pastel Lilac",
      "hex_code": "
          
          #EAD1E6
       "
    },
    {
      "name": "Pastel Sand",
      "hex_code": "
          
          #E4CDA3
       "
    }
  ]
}

This pastel color palette features soft and muted tones that are visually appealing and suitable for architectural presentations, making your spreadsheet easy on the eyes.

What specific elements of your architecture spreadsheet are you looking to enhance with these colors?