The hex color #d00d1d is a dark color. The web-safe version is Hex
#CC0033. A complementary color is
#2FF2E2. The grayscale version is
#535353. A 20% lighter version of the original color is
#FF4050, and Hex
#9D0000 is the 20% darker color. If the color is saturated by 10%, you get
#DC0618. If the color is desaturated by 10%, the color
#C41422 is obtained.