What are the meanings of different colours of the annunciator lights in cockpit?

What are the meanings of different colours  of the annunciator lights in cockpit?
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1 Answer

Answer :

RED: It indicates a failure in the system that  requires immediate attention and action of the  crew.
AMBER: It indicates a failure or malfunction of  a system that requires crew awareness,  although not necessarily requires any  immediate action.
WHITE: It indicates a switch is either in an  abnormal position or a maintenance switch is  on.
GREEN: It indicates normal operation of a back up system.
BLUE: It indicates normal operation of a  temporarily used system.
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