The hex color #1a8d9f is a dark color. The web-safe version is Hex
#339999. A complementary color is
#E57260. The grayscale version is
#6D6D6D. A 20% lighter version of the original color is
#4DC0D2, and Hex
#005A6C is the 20% darker color. If the color is saturated by 10%, you get
#1290A4. If the color is desaturated by 10%, the color
#228A9A is obtained.