The hex color #de1d2d is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#21E2D2. The grayscale version is
#636363. A 20% lighter version of the original color is
#FF5060, and Hex
#AB0000 is the 20% darker color. If the color is saturated by 10%, you get
#EA1628. If the color is desaturated by 10%, the color
#D22432 is obtained.