Cyan
 
About these coordinates     Color coordinates
Hex triplet#00FFFF
sRGBB (r, g, b)(0, 255, 255)
HSV (h, s, v)(180°, 100%, 100%)
CIELChuv (L, C, h)(91, 72, 192°)
Source[Unsourced]
B: Normalized to [0–255] (byte)

Cyan is the color intermediate between green and blue and therefore has a hex code intermediate between them, #00FFFF (0/255/255). This color is not commonly used.