The hex color #a6b8c7 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#594738. The grayscale version is
#B7B7B7. A 20% lighter version of the original color is
#D9EBFA, and Hex
#738594 is the 20% darker color. If the color is saturated by 10%, you get
#A4B8C9. If the color is desaturated by 10%, the color
#A8B8C5 is obtained.