The hex color #f11b01 is a dark color. The web-safe version is Hex
#FF3300. A complementary color is
#0EE4FE. The grayscale version is
#5A5A5A. A 20% lighter version of the original color is
#FF4E34, and Hex
#BE0000 is the 20% darker color. If the color is saturated by 10%, you get
#FF1500. If the color is desaturated by 10%, the color
#E2210A is obtained.