The hex color #fd4f5f is a light color. The web-safe version is Hex
#FF6666. A complementary color is
#02B0A0. The grayscale version is
#8E8E8E. A 20% lighter version of the original color is
#FF8292, and Hex
#CA1C2C is the 20% darker color. If the color is saturated by 10%, you get
#FF495A. If the color is desaturated by 10%, the color
#F25564 is obtained.