Here’s a revised color palette that features colors similar to dark purple, dark blue, and yellow, while ensuring they harmonize well together:

json
{
  "palette_name": "Twilight Harmony",
  "colors": [
    {
      "name": "Slate Blue",
      "hex_code": "
                            
                            #6A5ACD
                        "
    },
    {
      "name": "Midnight Blue",
      "hex_code": "
                            
                            #191970
                        "
    },
    {
      "name": "Goldenrod",
      "hex_code": "
                            
                            #DAA520
                        "
    }
  ]
}

This palette features Slate Blue and Midnight Blue, which are softer variations of the original dark colors, paired with Goldenrod for a warm and inviting contrast.

Would you like to see more variations or perhaps a specific application for this palette?