The hex color #f21c55 is a dark color. The web-safe version is Hex
#FF3366. A complementary color is
#0DE3AA. The grayscale version is
#767676. A 20% lighter version of the original color is
#FF4F88, and Hex
#BF0022 is the 20% darker color. If the color is saturated by 10%, you get
#FE1352. If the color is desaturated by 10%, the color
#E62558 is obtained.