The hex color #fa55b5 is a light color. The web-safe version is Hex
#FF66CC. A complementary color is
#05AA4A. The grayscale version is
#ACACAC. A 20% lighter version of the original color is
#FF88E8, and Hex
#C72282 is the 20% darker color. If the color is saturated by 10%, you get
#FF4CB6. If the color is desaturated by 10%, the color
#F25EB4 is obtained.