Certainly! To complement the colors #172528 (deep teal) and #d2d550 (muted yellow) without repeating the previous choice, I suggest adding #c3d2d5 , a soft, muted gray-blue. This color will provide a subtle contrast while maintaining the overall harmony of the palette.

Here is the updated color palette in JSON format:

json
{
  "palette_name": "Tranquil Harmony",
  "colors": [
    {
      "name": "Deep Teal",
      "hex_code": "
                            
                            #172528
                        "
    },
    {
      "name": "Muted Yellow",
      "hex_code": "
                            
                            #d2d550
                        "
    },
    {
      "name": "Soft Gray-Blue",
      "hex_code": "
                            
                            #c3d2d5
                        "
    }
  ]
}

This palette offers a serene and balanced look, combining the richness of deep teal, the brightness of muted yellow, and the calmness of gray-blue. Would you like to explore more palettes or perhaps focus on a specific theme?