The hex color #2c2d5b is a dark color. The web-safe version is Hex
#333366. A complementary color is
#D3D2A4. The grayscale version is
#3C3C3C. A 20% lighter version of the original color is
#5F608E, and Hex
#000028 is the 20% darker color. If the color is saturated by 10%, you get
#2A2C5E. If the color is desaturated by 10%, the color
#2E2F58 is obtained.