The hex color #df135d is a dark color. The web-safe version is Hex
#CC0066. A complementary color is
#20ECA2. The grayscale version is
#707070. A 20% lighter version of the original color is
#FF4690, and Hex
#AC002A is the 20% darker color. If the color is saturated by 10%, you get
#EA0A5B. If the color is desaturated by 10%, the color
#D41C5F is obtained.