Here is a refined color palette focused solely on various shades of red inspired by “ruby”:

json
{
  "palette_name": "Ruby Shades",
  "colors": [
    {
      "name": "Dark Ruby",
      "hex_code": "
          
          #A50034
       "
    },
    {
      "name": "Ruby Red",
      "hex_code": "
          
          #D10032
       "
    },
    {
      "name": "Bright Ruby",
      "hex_code": "
          
          #FF2B2B
       "
    },
    {
      "name": "Ruby Blush",
      "hex_code": "
          
          #F06292
       "
    },
    {
      "name": "Crimson Ruby",
      "hex_code": "
          
          #C72B2B
       "
    }
  ]
}

This palette captures the essence of ruby with a variety of red shades, offering depth and vibrancy while staying true to the theme.

Would you like to see how to use these colors in design, or do you have any other requests?