The hex color #45738f is a dark color. The web-safe version is Hex
#336699. A complementary color is
#BA8C70. The grayscale version is
#6D6D6D. A 20% lighter version of the original color is
#78A6C2, and Hex
#12405C is the 20% darker color. If the color is saturated by 10%, you get
#417492. If the color is desaturated by 10%, the color
#49728C is obtained.