<p>A wake-up appliance (100; 200; 300) comprises: an alarm device (20) generating an alarm signal; a control device (10) controlling the alarm device; at least one controllable light-generating device (1000; 2000; 3000) controlled by the control device. When the control device finds that an actual time becomes equal to a predetermined alarm time, it activates the alarm device. When the control device receives a user input signal at a snooze input, it stops the alarm signal and increases the intensity of at least a portion of the light generated in a blue range of the light spectrum.</p>
