The hex color #f11d40 is a dark color. The web-safe version is Hex
#FF3333. A complementary color is
#0EE2BF. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#FF5073, and Hex
#BE000D is the 20% darker color. If the color is saturated by 10%, you get
#FE153B. If the color is desaturated by 10%, the color
#E42545 is obtained.