Red
Blue
Green
Yellow
#FF0000
#0000FF
#00FF00
#FFFF00
rgb(255,0,0)
rgb(0,0,255)
rgb(0,255,0)
rgb(255,255,0)
hsl(0,100%,50%)
hsl(120,100%,50%)
hsl(120,100%,50%)
hsl(60,100%,50%)