The hex color #c93a1c is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#36C5E3. The grayscale version is
#606060. A 20% lighter version of the original color is
#FC6D4F, and Hex
#960700 is the 20% darker color. If the color is saturated by 10%, you get
#D43615. If the color is desaturated by 10%, the color
#BE3E23 is obtained.