The hex color #c33e31 is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3CC1CE. The grayscale version is
#666666. A 20% lighter version of the original color is
#F67164, and Hex
#900B00 is the 20% darker color. If the color is saturated by 10%, you get
#CC3A2C. If the color is desaturated by 10%, the color
#BA4236 is obtained.