The hex color #d30c1b is a dark color. The web-safe version is Hex
#CC0033. A complementary color is
#2CF3E4. The grayscale version is
#535353. A 20% lighter version of the original color is
#FF3F4E, and Hex
#A00000 is the 20% darker color. If the color is saturated by 10%, you get
#E00515. If the color is desaturated by 10%, the color
#C61321 is obtained.