Here is a single color palette with color names, hex codes, and a palette description based on the keywords "冷静" (calm):

1. Color Name: Misty Blue
   Hex Code: 
          
          #BFE1F4
       
   Palette Description: This tranquil shade of blue, reminiscent of a misty sky, exudes a sense of serenity and calmness. It evokes feelings of peace and tranquility.

2. Color Name: Pale Lavender
   Hex Code: 
          
          #E6E6FA
       
   Palette Description: This delicate hue of lavender, with its pale and subtle undertones, creates a soothing and restful atmosphere. It brings a sense of tranquility and relaxation.

3. Color Name: Soft Gray
   Hex Code: 
          
          #D3D3D3
       
   Palette Description: This soft shade of gray embodies a calming neutrality. It adds a touch of elegance and simplicity while maintaining a peaceful and composed ambiance.

4. Color Name: Serene Green
   Hex Code: 
          
          #C0D9AF
       
   Palette Description: This serene green color, reminiscent of lush foliage, instills a sense of harmony and balance. It symbolizes growth, renewal, and a connection with nature.

5. Color Name: Cool Taupe
   Hex Code: 
          
          #B0AC9E
       
   Palette Description: This cool-toned taupe shade combines the calming qualities of gray with subtle earthy undertones. It creates a serene and sophisticated atmosphere, perfect for a peaceful setting.

This color palette, inspired by the keyword "冷静," encompasses a range of soothing hues that evoke a sense of calmness, tranquility, and balance.