Actually, according to the manufacturer data, if you missed are under 12 hours late in taking any of the active beige tablets, you are still protected, but the protection is reduced for over 12 hours:
"The following advice refers to missing active beige tablets
If you are less than 12 hours late in taking any tablet, contraceptive protection is not reduced. You should take the tablet as soon as you remember and take further tablets at the usual time.
If you are more than 12 hours late in taking any active tablet, contraceptive protection may be reduced. The more consecutive tablets you have missed the higher the risk that the contraceptive effect is decreased.
You should take the missed tablet as soon as you remember (even if it means taking two tablets at the same time) and take the next tablets at the usual time. Use extra contraceptive precautions (barrier method) for the next 7 days.
There is an increased risk of becoming pregnant if you have missed active tablets at the beginning or end of the pack. If you have missed tablets at these times and have had sexual intercourse in the week before missing the tablet, there is a possibility of becoming pregnant. So tell your doctor immediately."