Here is a color palette based on your query for blue and yellow:

json
{
  "palette_name": "Sunny Blues",
  "colors": [
    {
      "name": "Sky Blue",
      "hex_code": "
          
          #87CEEB
       "
    },
    {
      "name": "Royal Blue",
      "hex_code": "
          
          #4169E1
       "
    },
    {
      "name": "Sunshine Yellow",
      "hex_code": "
          
          #FFD700
       "
    },
    {
      "name": "Canary Yellow",
      "hex_code": "
          
          #FFFF99
       "
    },
    {
      "name": "Deep Blue",
      "hex_code": "
          
          #00008B
       "
    }
  ]
}

This palette, “Sunny Blues,” combines various shades of blue with vibrant yellows, evoking a cheerful and bright atmosphere.

Would you like any specific shades or additional colors added to this palette?