Below acceleration altitude: TOGA, 15 degrees NU
Above that but below 10,000': CLB, 10 degrees NU
Above 10,000': CLB, 5 degrees NU
QRH then has various pitch / power couples for different weights and altitudes as it recommends you consider levelling off above MSA, as an increase in altitude may make the speed error even worse.
If you need a higher nose up pitch to stay level then you're a bit slow, and vice versa.
Hope that helps.