Here’s a color palette designed for a typographic poster with a sad theme, featuring two high contrast colors:

json
{
  "palette_name": "Sad Contrast",
  "colors": [
    {
      "name": "Deep Blue",
      "hex_code": "
          
          #003366
       "
    },
    {
      "name": "Pale Gray",
      "hex_code": "
          
          #D9D9D9
       "
    }
  ]
}

This palette utilizes a deep blue to convey a sense of sadness and depth, paired with a pale gray to create a stark contrast that enhances readability.

Would you like to explore more colors or themes for your poster?