The hex color #5b64bb is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#A49B44. The grayscale version is
#7E7E7E. A 20% lighter version of the original color is
#8E97EE, and Hex
#283188 is the 20% darker color. If the color is saturated by 10%, you get
#5861C1. If the color is desaturated by 10%, the color
#5F67B5 is obtained.