Here is a single color palette with six different colors incorporating light purple, dark blue, and a contrast color:

1. Color: Lavender
   Hex Code: 
          
          #E6E6FA
       
   Description: A light purple shade resembling the color of blooming lavender flowers. This soothing hue adds a touch of elegance and serenity to any design.

2. Color: Indigo
   Hex Code: 
          
          #4B0082
       
   Description: A deep and intense shade of blue, reminiscent of the night sky. Indigo brings a sense of mystery and sophistication, making it an ideal choice for creating a bold statement.

3. Color: Midnight Blue
   Hex Code: 
          
          #191970
       
   Description: A dark, rich shade of blue resembling the color of the deep ocean at night. Midnight blue exudes a sense of depth and tranquility, perfect for adding depth and contrast to your palette.

4. Color: Lilac
   Hex Code: 
          
          #C8A2C8
       
   Description: A pale, muted shade of purple with a hint of gray undertones. Lilac evokes a sense of delicacy and femininity, offering a soft and subtle addition to your color scheme.

5. Color: Royal Blue
   Hex Code: 
          
          #4169E1
       
   Description: A vibrant and regal shade of blue, reminiscent of the color often associated with royalty. Royal blue adds a bold and confident touch to your palette, making it an eye-catching choice.

6. Color: Coral
   Hex Code: 
          
          #FF7F50
       
   Description: A warm and energetic shade of orange with a touch of pink undertones. Coral injects a burst of vibrancy and liveliness into your palette, creating a striking contrast against the purple and blue tones.

This color palette combines light purple, dark blue, and a contrasting coral hue to create a harmonious blend of calming and energetic colors, ensuring a visually appealing and balanced design.