The hex color #521eab is a dark color. The web-safe version is Hex
#663399. A complementary color is
#ADE154. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#8551DE, and Hex
#1F0078 is the 20% darker color. If the color is saturated by 10%, you get
#5118B3. If the color is desaturated by 10%, the color
#5324A3 is obtained.