The hex color #fd4da4 is a light color. The web-safe version is Hex
#FF6699. A complementary color is
#02B25B. The grayscale version is
#A5A5A5. A 20% lighter version of the original color is
#FF80D7, and Hex
#CA1A71 is the 20% darker color. If the color is saturated by 10%, you get
#FF44A4. If the color is desaturated by 10%, the color
#F456A4 is obtained.