The hex color #2f6e7f is a dark color. The web-safe version is Hex
#336666. A complementary color is
#D09180. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#62A1B2, and Hex
#003B4C is the 20% darker color. If the color is saturated by 10%, you get
#2A7082. If the color is desaturated by 10%, the color
#346C7C is obtained.