It depends on how you read a book. Actually, DomiLamp is designed for mood lighting, especially when multiple units work together. The Bright White mode is designed for common lighting purposes.
If you‘re sitting in front of a desk where you put a book and DomiLamp on, the latter would not directly illuminate the book pages. It is not like a normal reading lamp in which the bulb is vertically facing the table.
If you're leaning against the couch or bed and reading a book with a relaxed posture, a DomiLamp aside would be a good partner for lighting up what you read. Additionally, in the Bright White mode, DomiLamp would not synchronize with other units, which helps you focus on what you are doing.