The hex color #574ccc is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#A8B333. The grayscale version is
#7A7A7A. A 20% lighter version of the original color is
#8A7FFF, and Hex
#241999 is the 20% darker color. If the color is saturated by 10%, you get
#5347D4. If the color is desaturated by 10%, the color
#5B51C4 is obtained.