Here’s a color palette that features shades of gray suitable for a square input box with a 1px border:

json
{
  "palette_name": "Gray Input Box Palette",
  "colors": [
    {
      "name": "Light Gray",
      "hex_code": "
          
          #D3D3D3
       "
    },
    {
      "name": "Medium Gray",
      "hex_code": "
          
          #A9A9A9
       "
    },
    {
      "name": "Dark Gray",
      "hex_code": "
          
          #808080
       "
    },
    {
      "name": "Dim Gray",
      "hex_code": "
          
          #696969
       "
    },
    {
      "name": "Slate Gray",
      "hex_code": "
          
          #708090
       "
    }
  ]
}

This palette includes a range of gray shades that can work well for an input box, with lighter shades for the background and darker shades for the border. Would you like assistance with anything else, like font suggestions or specific styling tips?