The hex color #00577c is a dark color. The web-safe version is Hex
#006666. A complementary color is
#FFA883. The grayscale version is
#464646. A 20% lighter version of the original color is
#338AAF, and Hex
#002449 is the 20% darker color. If the color is saturated by 10%, you get
#005981. If the color is desaturated by 10%, the color
#075577 is obtained.