The hex color #0f5f5f is a dark color. The web-safe version is Hex
#006666. A complementary color is
#F0A0A0. The grayscale version is
#444444. A 20% lighter version of the original color is
#429292, and Hex
#002C2C is the 20% darker color. If the color is saturated by 10%, you get
#0A6262. If the color is desaturated by 10%, the color
#145C5C is obtained.