Here is a color palette based on your query for blanco (white), negro (black), gris (gray), and rojo (red):

json
{
  "palette_name": "Blanco, Negro, Gris y Rojo",
  "colors": [
    {
      "name": "Blanco",
      "hex_code": "
                            
                            #FFFFFF
                        "
    },
    {
      "name": "Negro",
      "hex_code": "
                            
                            #000000
                        "
    },
    {
      "name": "Gris",
      "hex_code": "
                            
                            #808080
                        "
    },
    {
      "name": "Rojo",
      "hex_code": "
                            
                            #FF0000
                        "
    }
  ]
}

This palette features a striking combination of white, black, gray, and red, creating a bold and dynamic contrast. The white provides a clean background, while black adds depth. Gray serves as a neutral balance, and red injects a vibrant pop of color.

Would you like to explore different shades of these colors or perhaps create a new palette with other colors?