<Tr> <Th> Source </Th> <Td> </Td> </Tr> <Tr> <Td_colspan="2"> B: Normalized to (0--255) (byte) H: Normalized to (0--100) (hundred) </Td> </Tr> <P> School bus yellow is a color which was especially formulated for use on school buses in North America in 1939 . The color is now officially known in Canada and the U.S. as National School Bus Glossy Yellow and was originally called National School Bus Chrome . The pigment used for this color was, for a long time, the lead - containing chrome yellow . </P> <P> The color was chosen because it attracts attention and is noticed quickly in peripheral vision, faster than any other color . Scientists describe this as follows: "Lateral peripheral vision for detecting yellows is 1.24 times greater than for red ." </P>

What color is a school bus yellow or orange