Here’s a vibrant and energetic update to your existing “Kimetsu no Yaiba” color palette:

1. Crimson Red becomes a more vibrant Fiery Red: #FF2B00
2. Demon Black is updated to a lighter and more dynamic Deep Charcoal: #3C3C3C
3. Tanjirou Green transforms into a brighter Emerald Green: #00B300
4. Nezuko Pink is enhanced to a more vivid Bubblegum Pink: #FF6F92
5. Zenitsu Yellow shifts to a brighter Sunshine Yellow: #FFFF55
6. Kanao Purple is updated to a livelier Vivid Violet: #A400A4

Here’s the updated color palette in JSON format:

json
{
  "palette_name": "Vibrant Kimetsu no Yaiba",
  "colors": [
    {
      "name": "Fiery Red",
      "hex_code": "
                            
                            #FF2B00
                        "
    },
    {
      "name": "Deep Charcoal",
      "hex_code": "
                            
                            #3C3C3C
                        "
    },
    {
      "name": "Emerald Green",
      "hex_code": "
                            
                            #00B300
                        "
    },
    {
      "name": "Bubblegum Pink",
      "hex_code": "
                            
                            #FF6F92
                        "
    },
    {
      "name": "Sunshine Yellow",
      "hex_code": "
                            
                            #FFFF55
                        "
    },
    {
      "name": "Vivid Violet",
      "hex_code": "
                            
                            #A400A4
                        "
    }
  ]
}

This updated palette maintains the overall theme of “Kimetsu no Yaiba” while infusing it with a more vibrant and energetic feel.

Do you have any additional changes in mind, or would you like to explore more color options?