Here’s an updated pastel color palette with darker colors included, while removing Powder Pink and Mint Cream:

 <Pastel Dashboard with Darker Variations>
1. Soft Blue - 
                            
                            #A3C6E6
                         - A calming light blue that promotes clarity and focus.
2. Pale Green - 
                            
                            #B7E2D8
                         - A soothing green that enhances a feeling of balance and harmony.
3. Lavender - 
                            
                            #E3D7E7
                         - A gentle lavender that adds a touch of creativity without being overwhelming.
4. Light Peach - 
                            
                            #F4C3B2
                         - A warm peach that introduces a subtle warmth and approachability.
5. Deep Slate - 
                            
                            #4A6E8C
                         - A dark blue-gray that provides depth and contrast for data visualization.
6. Forest Green - 
                            
                            #3B7A57
                         - A rich green that adds a grounded feel and enhances the natural theme.
7. Dusty Rose - 
                            
                            #C68A9B
                         - A muted rose that adds warmth and sophistication to the palette.
8. Charcoal Gray - 
                            
                            #333333
                         - A deep gray that offers strong contrast and can be used for text or critical elements.

This revised palette maintains the soft and professional vibe while introducing darker colors for contrast and depth. The addition of darker shades helps in data visualization, ensuring that important elements stand out.

Would you like more adjustments to this palette, or do you have specific elements in mind that you’d like to highlight further?