The hex color #3c4077 is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C3BF88. The grayscale version is
#515151. A 20% lighter version of the original color is
#6F73AA, and Hex
#090D44 is the 20% darker color. If the color is saturated by 10%, you get
#3A3E7B. If the color is desaturated by 10%, the color
#3E4273 is obtained.