The hex color #cf185e is a dark color. The web-safe version is Hex
#CC0066. A complementary color is
#30E7A1. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#FF4B91, and Hex
#9C002B is the 20% darker color. If the color is saturated by 10%, you get
#D9105D. If the color is desaturated by 10%, the color
#C5205F is obtained.