The hex color #d63c3b is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#29C3C4. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#FF6F6E, and Hex
#A30908 is the 20% darker color. If the color is saturated by 10%, you get
#E03736. If the color is desaturated by 10%, the color
#CC4140 is obtained.