The hex color #cf4d37 is a dark color. The web-safe version is Hex
#CC6633. A complementary color is
#30B2C8. The grayscale version is
#717171. A 20% lighter version of the original color is
#FF806A, and Hex
#9C1A04 is the 20% darker color. If the color is saturated by 10%, you get
#D84931. If the color is desaturated by 10%, the color
#C6513D is obtained.