The hex color #d2040a is a dark color. The web-safe version is Hex
#CC0000. A complementary color is
#2DFBF5. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#FF373D, and Hex
#9F0000 is the 20% darker color. If the color is saturated by 10%, you get
#E00004. If the color is desaturated by 10%, the color
#C40B10 is obtained.