The hex color #f0371c is a dark color. The web-safe version is Hex
#FF3333. A complementary color is
#0FC8E3. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#FF6A4F, and Hex
#BD0400 is the 20% darker color. If the color is saturated by 10%, you get
#FD3214. If the color is desaturated by 10%, the color
#E33C24 is obtained.