The forward voltage drop of a LED is a function of the wavelength of light it produces. The more energetic shorter wavelengths require a higher voltage from the LED that produces them.
There are several different technologies for making a "white" LED. Some use a blue LED, with phosphors to convert some of the blue light to longer wavelengths. Others use a near UV LED, with all the visible light coming from re-emission from phosphors.
White LEDs therefore have the same or a bit higher voltage drop than blue LEDs.
There is yet another, less common, technology for white LEDs, which is multiple single-color LEDs in the same package. If the single LEDs are wired in series, these will have a even higher voltage drop due to that of the multiple LEDs adding up. However, I haven't seen one of these in a while. There are multi-color LEDs, but these give separate access to the individual red, green, and blue LEDs so that you can control the overall color. That's not the same thing.