The hex color #c02a1f is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3FD5E0. The grayscale version is
#585858. A 20% lighter version of the original color is
#F35D52, and Hex
#8D0000 is the 20% darker color. If the color is saturated by 10%, you get
#CA2519. If the color is desaturated by 10%, the color
#B62F25 is obtained.