The hex color #2c29ab is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D3D654. The grayscale version is
#555555. A 20% lighter version of the original color is
#5F5CDE, and Hex
#000078 is the 20% darker color. If the color is saturated by 10%, you get
#2825B4. If the color is desaturated by 10%, the color
#302DA2 is obtained.