The hex color #4e40a5 is a dark color. The web-safe version is Hex
#663399. A complementary color is
#B1BF5A. The grayscale version is
#666666. A 20% lighter version of the original color is
#8173D8, and Hex
#1B0D72 is the 20% darker color. If the color is saturated by 10%, you get
#4C3CAB. If the color is desaturated by 10%, the color
#50449F is obtained.