The hex color #c50f11 is a dark color. The web-safe version is Hex
#CC0000. A complementary color is
#3AF0EE. The grayscale version is
#4C4C4C. A 20% lighter version of the original color is
#F84244, and Hex
#920000 is the 20% darker color. If the color is saturated by 10%, you get
#D1090B. If the color is desaturated by 10%, the color
#B91517 is obtained.