Which of the following will make an element blue in CSS$?$

Question $4$Select one:

color:#$0$ff or rgb$(0,0,255)$; $($same effect$)$

color: #$990000$;

color:blue or rgb$(255,0,0)$; $($same effect$)$

color:blue or color: #$0000$ff; $($same effect$)$