The hex color #c74b2b is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#38B4D4. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#FA7E5E, and Hex
#941800 is the 20% darker color. If the color is saturated by 10%, you get
#D04825. If the color is desaturated by 10%, the color
#BE4E31 is obtained.