The hex color #20878c is a dark color. The web-safe version is Hex
#339999. A complementary color is
#DF7873. The grayscale version is
#666666. A 20% lighter version of the original color is
#53BABF, and Hex
#005459 is the 20% darker color. If the color is saturated by 10%, you get
#198A90. If the color is desaturated by 10%, the color
#278488 is obtained.