The hex color #5b4ecc is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#A4B133. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#8E81FF, and Hex
#281B99 is the 20% darker color. If the color is saturated by 10%, you get
#5849D4. If the color is desaturated by 10%, the color
#5E53C4 is obtained.