The hex color #2c44ab is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D3BB54. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#5F77DE, and Hex
#001178 is the 20% darker color. If the color is saturated by 10%, you get
#2741B3. If the color is desaturated by 10%, the color
#3147A3 is obtained.