The hex color #f90f5f is a dark color. The web-safe version is Hex
#FF0066. A complementary color is
#06F0A0. The grayscale version is
#787878. A 20% lighter version of the original color is
#FF4292, and Hex
#C6002C is the 20% darker color. If the color is saturated by 10%, you get
#FF055D. If the color is desaturated by 10%, the color
#EC1961 is obtained.