The hex color #f33f2f is a dark color. The web-safe version is Hex
#FF3333. A complementary color is
#0CC0D0. The grayscale version is
#767676. A 20% lighter version of the original color is
#FF7262, and Hex
#C00C00 is the 20% darker color. If the color is saturated by 10%, you get
#FF3A28. If the color is desaturated by 10%, the color
#E64436 is obtained.