The hex color #d54d1b is a dark color. The web-safe version is Hex
#CC6633. A complementary color is
#2AB2E4. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#FF804E, and Hex
#A21A00 is the 20% darker color. If the color is saturated by 10%, you get
#E04A13. If the color is desaturated by 10%, the color
#CA5023 is obtained.