The hex color #2a11d2 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#D5EE2D. The grayscale version is
#5A5A5A. A 20% lighter version of the original color is
#5D44FF, and Hex
#00009F is the 20% darker color. If the color is saturated by 10%, you get
#250ADE. If the color is desaturated by 10%, the color
#2F18C6 is obtained.