The hex color #c93d1e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#36C2E1. The grayscale version is
#616161. A 20% lighter version of the original color is
#FC7051, and Hex
#960A00 is the 20% darker color. If the color is saturated by 10%, you get
#D33917. If the color is desaturated by 10%, the color
#BF4125 is obtained.