Derivative discontinuities near the yellow-purple boundary on the left reveal normal discontinuities.
2.
RGB color model, although " theoretically " capable to get very close to the purple boundary due to its CMYK's primary, is also rather distant from the line for the reason explained above.
3.
On a chromaticity diagram, the straight line connecting the extreme spectral colors ( red and violet ) is known as the line of purples ( or'purple boundary'); it represents one limit of human color perception.
मोबाइल