The hex color #c53f2f is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3AC0D0. The grayscale version is
#666666. A 20% lighter version of the original color is
#F87262, and Hex
#920C00 is the 20% darker color. If the color is saturated by 10%, you get
#CE3B29. If the color is desaturated by 10%, the color
#BC4335 is obtained.