The hex color #e6511c is a dark color. The web-safe version is Hex
#FF6633. A complementary color is
#19AEE3. The grayscale version is
#717171. A 20% lighter version of the original color is
#FF844F, and Hex
#B31E00 is the 20% darker color. If the color is saturated by 10%, you get
#F24E14. If the color is desaturated by 10%, the color
#DA5425 is obtained.