The hex color #d7424d is a dark color. The web-safe version is Hex
#CC3366. A complementary color is
#28BDB2. The grayscale version is
#777777. A 20% lighter version of the original color is
#FF7580, and Hex
#A40F1A is the 20% darker color. If the color is saturated by 10%, you get
#E13D49. If the color is desaturated by 10%, the color
#CD4751 is obtained.