The hex color #415f6c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#BEA093. The grayscale version is
#595959. A 20% lighter version of the original color is
#74929F, and Hex
#0E2C39 is the 20% darker color. If the color is saturated by 10%, you get
#3F606E. If the color is desaturated by 10%, the color
#435E6A is obtained.