The hex color #4e40e3 is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#B1BF1C. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#8173FF, and Hex
#1B0DB0 is the 20% darker color. If the color is saturated by 10%, you get
#4A3AED. If the color is desaturated by 10%, the color
#5346D9 is obtained.