Here is a simple two-color palette that would be suitable for a research framework diagram in a scientific research proposal:

json
{
  "palette_name": "Scientific Research Framework",
  "colors": [
    {
      "name": "Deep Blue",
      "hex_code": "
                            
                            #003366
                        "
    },
    {
      "name": "Light Gray",
      "hex_code": "
                            
                            #D3D3D3
                        "
    }
  ]
}

This palette includes a deep blue color that conveys professionalism and trust, paired with a light gray that adds contrast without being overwhelming.

Would you like more color options or perhaps some suggestions on how to use these colors effectively in your diagram?