int redpin= 9 ;
int greenpin =10 ;
int bluepin = 11 ;

void setup() {
  pinMode(redpin,OUTPUT); 
  pinMode(greenpin,OUTPUT); 
  pinMode(bluepin,OUTPUT); 
}

void loop() {
 renka (0,255,255); //kırmızı
 delay(1500); 
 renka (255,0,255);  // yeşil
 delay(1500); 
 renka(255,255,0); // mavi
  delay(1500); 
  renka(0,0,255); 
   delay(1500); 

} 
void  renka (int red,int green,int blue ){
  red = 255-red; 
  green = 255-green; 
  blue = 255-blue; 
  analogWrite (redpin,red); 
  analogWrite(greenpin,green); 
  analogWrite (bluepin,blue); 
}