The hex color #c81efb is a dark color. The web-safe version is Hex
#CC33FF. A complementary color is
#37E104. The grayscale version is
#A0A0A0. A 20% lighter version of the original color is
#FB51FF, and Hex
#9500C8 is the 20% darker color. If the color is saturated by 10%, you get
#CC11FF. If the color is desaturated by 10%, the color
#C42BF2 is obtained.