Here’s the updated color palette with standard red, green, and orange, while retaining the rest of the colors as specified:

 <Mixed Blues and Pastels with Standard Colors>
1. Light Sky Blue - 
          
          #A4D8E1
        - A soft, light blue that evokes tranquility and clarity.
2. Medium Blue - 
          
          #3B7A9B
        - A vibrant yet calming medium blue ideal for data visualization.
3. Dark Blue - 
          
          #2A4D69
        - A rich dark blue that adds depth and contrast to your designs.
4. Navy Blue - 
          
          #1B2A49
        - A deep navy that can ground the palette and enhance readability.
5. Light Lavender - 
          
          #E3D7E7
        - A gentle light purple that adds a touch of creativity without being overwhelming.
6. Dark Purple - 
          
          #5D4C8A
        - A bold dark purple that brings sophistication and depth.
7. Red - 
          
          #FF4C4C
        - A bright, standard red that introduces warmth and energy to the palette.
8. Green - 
          
          #4CAF50
        - A standard green that enhances the feeling of balance and vitality.
9. Orange - 
          
          #FF9800
        - A bright, standard orange that adds a cheerful and inviting touch.
10. Light Gray - 
          
          #D3D3D3
        - A neutral light gray that provides a calm background for data visualization.
11. Dark Gray - 
          
          #555555
        - A deep gray that offers strong contrast and can be used for text or critical elements.

This palette now includes standard red, green, and orange, providing a vibrant contrast to the softer blues and purples while maintaining a professional look.

Would you like any further modifications or specific applications of these colors for your dashboard?