Like running, it can take place on a track or as a road race. The main competitions take place at the Summer Paralympics which wheelchair racing and athletics has been a part of since 1960. Competitors compete in specialized wheelchairs which allow the athletes to reach speeds of 30 km/h or more.
Hue is one of the main properties (called color appearance parameters) of a color, defined technically (in the CIECAM02 model), as the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow  (the unique hues).
1 (hue, as opposed to achromatic colours) : hue, shade, blee. ( 2 human skin tone as an indicator of race or ethnicity) : colour of oneâs skin, complexion, blee, ethnicity, race. ( 3 interest, especially in a selective area) : interest. ( 4 dark tincture) : stain. ( 5 standard or banner) : banner, standard.