The hex color #576ffc is a dark color. The web-safe version is Hex
#6666FF. A complementary color is
#A89003. The grayscale version is
#969696. A 20% lighter version of the original color is
#8AA2FF, and Hex
#243CC9 is the 20% darker color. If the color is saturated by 10%, you get
#516BFF. If the color is desaturated by 10%, the color
#5D73F2 is obtained.