The hex color #6e40b4 is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#91BF4B. The grayscale version is
#767676. A 20% lighter version of the original color is
#A173E7, and Hex
#3B0D81 is the 20% darker color. If the color is saturated by 10%, you get
#6D3BBA. If the color is desaturated by 10%, the color
#6F45AE is obtained.