The hex color #cf454d is a dark color. The web-safe version is Hex
#CC3366. A complementary color is
#30BAB2. The grayscale version is
#767676. A 20% lighter version of the original color is
#FF7880, and Hex
#9C121A is the 20% darker color. If the color is saturated by 10%, you get
#D84049. If the color is desaturated by 10%, the color
#C64A51 is obtained.