Here is a color palette based on your request, featuring red, blue, yellow, and additional non-primary colors, along with a light background color.

json
{
  "palette_name": "Vibrant Contrast",
  "colors": [
    {
      "name": "Crimson Red",
      "hex_code": "
                            
                            #DC143C
                        "
    },
    {
      "name": "Royal Blue",
      "hex_code": "
                            
                            #4169E1
                        "
    },
    {
      "name": "Golden Yellow",
      "hex_code": "
                            
                            #FFD700
                        "
    },
    {
      "name": "Teal",
      "hex_code": "
                            
                            #008080
                        "
    },
    {
      "name": "Coral",
      "hex_code": "
                            
                            #FF7F50
                        "
    },
    {
      "name": "Lavender",
      "hex_code": "
                            
                            #E6E6FA
                        "
    },
    {
      "name": "Light Gray",
      "hex_code": "
                            
                            #D3D3D3
                        "
    }
  ]
}

This palette includes vibrant colors for a striking contrast, with a soft light gray as a background color to allow the other colors to stand out beautifully.

Would you like to explore specific applications for this palette, or do you have any other color preferences in mind?