Here’s a color palette designed for an Excel table that ensures readability with black text and looks great when printed. This palette features colors that provide good contrast while maintaining a professional appearance.

### Color Palette: "Professional Contrast"

1. **Sky Blue**
   - **Hex Code:** 
                            
                            #A4C8E1
                        
   - **Description:** A soft, calming blue that offers excellent contrast against black text, making it easy to read while providing a professional atmosphere.

2. **Soft Green**
   - **Hex Code:** 
                            
                            #B7E4D9
                        
   - **Description:** A gentle green shade that promotes a sense of balance and is easy on the eyes, ensuring clarity for any printed format.

3. **Light Gray**
   - **Hex Code:** 
                            
                            #D3D3D3
                        
   - **Description:** A neutral light gray that serves as a subtle background, enhancing the visibility of black text without being overpowering.

4. **Peach**
   - **Hex Code:** 
                            
                            #F4B6A8
                        
   - **Description:** A warm peach tone that adds a touch of warmth to the palette, ensuring that black text remains legible while providing a friendly aesthetic.

5. **Lavender**
   - **Hex Code:** 
                            
                            #E6E6FA
                        
   - **Description:** A light lavender shade that creates a tranquil backdrop for data, offering a soft contrast that is both readable and visually appealing.

6. **Cream**
   - **Hex Code:** 
                            
                            #FFFDD0
                        
   - **Description:** A warm cream color that brightens the table layout while providing a gentle contrast against black text, making it perfect for printed reports.

### Overall Palette Description:
This "Professional Contrast" palette is ideal for Excel tables, ensuring that black text is easily readable while maintaining an elegant and clean look. The colors are soft enough to be pleasant to the eye, yet distinct enough to stand out when printed, making them suitable for various professional settings.