The hex color #2e9ef3 is a light color. The web-safe version is Hex
#3399FF. A complementary color is
#D1610C. The grayscale version is
#959595. A 20% lighter version of the original color is
#61D1FF, and Hex
#006BC0 is the 20% darker color. If the color is saturated by 10%, you get
#249FFC. If the color is desaturated by 10%, the color
#389DEA is obtained.