Here’s a color palette that features two high-contrast colors suitable for a sad typographic poster:

json
{
  "palette_name": "Melancholic Contrast",
  "colors": [
    {
      "name": "Deep Blue",
      "hex_code": "
          
          #003366
       "
    },
    {
      "name": "Soft Grey",
      "hex_code": "
          
          #D3D3D3
       "
    }
  ]
}

This palette combines a deep, somber blue with a soft grey, creating a striking contrast that conveys a sense of sadness while maintaining readability for any text.

Would you like additional suggestions or help with anything else related to your poster?