re blue led s in article c yqde cq ecf toronto edu gladman ecf toronto edu gladman aviv writes that s why you don t find blue leds or for that matter some other colour of leds that is not to say that blue leds can t be found i ve seen blue leds sold but they were just your typical visible light led in a blue plastic covering they didn t emit very much light sorry charlie i have a dozen very blue led s on my bench right now they have a clear plastic case and when lit are absolutely blue the hue is sort of a summer day cloudless sky blue but make no mistake they are blue you can buy them from digikey circuit specialist jameco i think led tronics stanley optoelectronics and others the current price is around each for small quantities i will also be selling them through my mail order company in the near future weeks write for details if interested john
