The hex color #0da3d0 is a dark color. The web-safe version is Hex
#0099CC. A complementary color is
#F25C2F. The grayscale version is
#808080. A 20% lighter version of the original color is
#40D6FF, and Hex
#00709D is the 20% darker color. If the color is saturated by 10%, you get
#02A7D8. If the color is desaturated by 10%, the color
#19A0C8 is obtained.