*Attention:* The IES website will be temporarily unavailable from May 9th to May 13th for site updates. We apologize for any inconvenience and will provide an update closer to the time. Thank you for your continued support of the Illuminating Engineering Society.
DonateJoinMy IES

hue angle (h)

A numerical representation of hue, specified as the angle from a cardinal axis in a color space or color appearance model.

Note: Hue angle is often measured in the counterclockwise direction from the cardinal axis most closely related to “red.”

« Back to Definitions Index