The hex color #c30e1c is a dark color. The web-safe version is Hex
#CC0033. A complementary color is
#3CF1E3. The grayscale version is
#4F4F4F. A 20% lighter version of the original color is
#F6414F, and Hex
#900000 is the 20% darker color. If the color is saturated by 10%, you get
#CF0817. If the color is desaturated by 10%, the color
#B71521 is obtained.