#999900 - RGB (153, 153, 0) - CMYK (0, 0, 100, 40)

#999900
153, 153, 0
60, 60, 0
0, 0, 100, 40
60°, 100%, 30%
60°, 100%, 60%

Color schemes that include #999900

#990099 #999900 #009999

Triadic Colors

#99004d #999900 #00994d #000099

Square Colors

#6c0099 #999900 #006c99

Golden Ratio