The hex color #de1d06 is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#21E2F9. The grayscale version is
#565656. A 20% lighter version of the original color is
#FF5039, and Hex
#AB0000 is the 20% darker color. If the color is saturated by 10%, you get
#EC1700. If the color is desaturated by 10%, the color
#D0230E is obtained.