The hex color #3a318c is a dark color. The web-safe version is Hex
#333399. A complementary color is
#C5CE73. The grayscale version is
#525252. A 20% lighter version of the original color is
#6D64BF, and Hex
#070059 is the 20% darker color. If the color is saturated by 10%, you get
#382E92. If the color is desaturated by 10%, the color
#3C3486 is obtained.