<P> Rainbows span a continuous spectrum of colours . Any distinct bands perceived are an artefact of human colour vision , and no banding of any type is seen in a black - and - white photo of a rainbow , only a smooth gradation of intensity to a maximum , then fading towards the other side . For colours seen by the human eye , the most commonly cited and remembered sequence is Newton 's sevenfold red , orange , yellow , green , blue , indigo and violet , remembered by the mnemonic , Richard Of York Gave Battle In Vain ( ROYGBIV ) . </P>
<P> Rainbows span a continuous spectrum of colours . Any distinct bands perceived are an artefact of human colour vision , and no banding of any type is seen in a black - and - white photo of a rainbow , only a smooth gradation of intensity to a maximum , then fading towards the other side . For colours seen by the human eye , the most commonly cited and remembered sequence is Newton 's sevenfold red , orange , yellow , green , blue , indigo and violet , remembered by the mnemonic , Richard Of York Gave Battle In Vain ( ROYGBIV ) . </P>
what are the true colors of a rainbow
what are the true colors of a rainbow
red , orange , yellow , green , blue , indigo and violet
red , orange , yellow , green , blue , indigo and violet