LEDs work a lot like fluorescents. Fluorescents produce low-UV internally, then that low-UV hits a layer that fluoresces something close to white (but typically poor CRI - the spread of color spectrum is 'notchy' compared to sunlight or halogen.

LEDs do similar - but internally it's more of a high blue - and they're typically not tubular (no need as they don't use gas excitation like fluorescents)

Here's the thing: they come in different color temperatures (measured in Kelvin), the high-CRI ones don't have more blue than natural light so a low-Kelvin high-CRI of comparable luminance and color temp to an incandescent won't have any more blue than that incandescent.