The hex color #dd3b10 is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#22C4EF. The grayscale version is
#636363. A 20% lighter version of the original color is
#FF6E43, and Hex
#AA0800 is the 20% darker color. If the color is saturated by 10%, you get
#E93708. If the color is desaturated by 10%, the color
#D13F18 is obtained.