The hex color #3a75b4 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#C58A4B. The grayscale version is
#767676. A 20% lighter version of the original color is
#6DA8E7, and Hex
#074281 is the 20% darker color. If the color is saturated by 10%, you get
#3475BA. If the color is desaturated by 10%, the color
#4075AE is obtained.