The hex color #09a3b9 is a dark color. The web-safe version is Hex
#0099CC. A complementary color is
#F65C46. The grayscale version is
#777777. A 20% lighter version of the original color is
#3CD6EC, and Hex
#007086 is the 20% darker color. If the color is saturated by 10%, you get
#00A7C0. If the color is desaturated by 10%, the color
#149FB2 is obtained.