The hex color #c7424d is a dark color. The web-safe version is Hex
#CC3366. A complementary color is
#38BDB2. The grayscale version is
#727272. A 20% lighter version of the original color is
#FA7580, and Hex
#940F1A is the 20% darker color. If the color is saturated by 10%, you get
#D03D49. If the color is desaturated by 10%, the color
#BF4751 is obtained.