Here’s a refined color palette featuring 4 main colors with 2 accent colors for each:

json
{
  "palette_name": "Sophisticated Poker Chip Palette",
  "colors": [
    {
      "name": "Deep Burgundy",
      "hex_code": "
                            
                            #7A2C2E
                        "
    },
    {
      "name": "Burgundy Accent",
      "hex_code": "
                            
                            #A45B61
                        "
    },
    {
      "name": "Slate Gray",
      "hex_code": "
                            
                            #4A4A4A
                        "
    },
    {
      "name": "Gray Accent",
      "hex_code": "
                            
                            #B0B0B0
                        "
    },
    {
      "name": "Forest Green",
      "hex_code": "
                            
                            #3B5A29
                        "
    },
    {
      "name": "Green Accent",
      "hex_code": "
                            
                            #6DAA6D
                        "
    },
    {
      "name": "Muted Gold",
      "hex_code": "
                            
                            #BDA96B
                        "
    },
    {
      "name": "Gold Accent",
      "hex_code": "
                            
                            #E1C68B
                        "
    }
  ]
}

This palette maintains a sophisticated and classy feel, with each main color supported by complementary accent colors to enhance versatility in design. The deep burgundy and forest green serve as the foundation, while slate gray and muted gold add elegance, and their respective accents provide depth and visual interest.

Would you like to explore any specific combinations or applications for these colors?