The hex color #04645c is a dark color. The web-safe version is Hex
#006666. A complementary color is
#FB9BA3. The grayscale version is
#414141. A 20% lighter version of the original color is
#37978F, and Hex
#003129 is the 20% darker color. If the color is saturated by 10%, you get
#00675F. If the color is desaturated by 10%, the color
#0A6159 is obtained.