The hex color #c01f3d is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3FE0C2. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#F35270, and Hex
#8D000A is the 20% darker color. If the color is saturated by 10%, you get
#CA193A. If the color is desaturated by 10%, the color
#B62540 is obtained.