The hex color #3a33ab is a dark color. The web-safe version is Hex
#333399. A complementary color is
#C5CC54. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#6D66DE, and Hex
#070078 is the 20% darker color. If the color is saturated by 10%, you get
#362FB3. If the color is desaturated by 10%, the color
#3E37A3 is obtained.