The hex color #4b45a3 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#B4BA5C. The grayscale version is
#666666. A 20% lighter version of the original color is
#7E78D6, and Hex
#181270 is the 20% darker color. If the color is saturated by 10%, you get
#4842A9. If the color is desaturated by 10%, the color
#4E489D is obtained.