The hex color #C9213F is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#36DEC0. The grayscale version is
#636363. A 20% lighter version of the original color is
#FC5472, and Hex
#96000C is the 20% darker color. If the color is saturated by 10%, you get
#D31A3B. If the color is desaturated by 10%, the color
#BF2843 is obtained.