The hex color #649ebc is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#9B6143. The grayscale version is
#959595. A 20% lighter version of the original color is
#97D1EF, and Hex
#316B89 is the 20% darker color. If the color is saturated by 10%, you get
#5F9FC0. If the color is desaturated by 10%, the color
#699DB8 is obtained.