The hex color #2D9DB4 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#D2624B. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#60D0E7, and Hex
#006A81 is the 20% darker color. If the color is saturated by 10%, you get
#25A0B9. If the color is desaturated by 10%, the color
#359AAF is obtained.