The hex color #1f9a8f is a dark color. The web-safe version is Hex
#339999. A complementary color is
#E06570. The grayscale version is
#6D6D6D. A 20% lighter version of the original color is
#52CDC2, and Hex
#00675C is the 20% darker color. If the color is saturated by 10%, you get
#179E92. If the color is desaturated by 10%, the color
#27968C is obtained.