Color Palette:

1. Color Name: Mint Green
   Hex Code: 
          
          #98FF98
       
   Palette Description: This refreshing and soothing shade of green, resembling the color of mint leaves, adds a calming and tranquil vibe to any design. It is perfect for creating a "小清新" (fresh and pure) atmosphere in a flat graphic.

2. Color Name: Baby Pink
   Hex Code: 
          
          #FFB6C1
       
   Palette Description: This delicate and soft shade of pink, resembling the color of a baby's blush, brings a touch of innocence and sweetness to the color palette. It complements the "小清新" theme by adding a gentle and romantic flair.

3. Color Name: Sky Blue
   Hex Code: 
          
          #87CEEB
       
   Palette Description: This light and airy shade of blue, reminiscent of a clear sky, evokes a sense of freedom and tranquility. It enhances the "小清新" style by adding a fresh and breezy feel to the color palette.

4. Color Name: Lavender
   Hex Code: 
          
          #E6E6FA
       
   Palette Description: This pale purple shade, resembling the color of blooming lavender flowers, brings a touch of elegance and sophistication to the palette. It adds a subtle hint of femininity and grace to the "小清新" design.

5. Color Name: Peach
   Hex Code: 
          
          #FFDAB9
       
   Palette Description: This warm and inviting shade of orange-pink, resembling the color of ripe peaches, adds a cheerful and lively element to the color palette. It injects a vibrant and energetic vibe into the "小清新" flat graphic.