(In Inkscape, created Liberation Sans version in maroon (because that color is used in Kelvin) that shows difference, then exported as path. {{PD-self}})
(A Unicode kelvin symbol and an uppercase K, rendered in DejaVu Sans 16 and converted from text to path in Inkscape. Note that the two glyphs are identical in DejaVu Sans, which is perfectly acceptable as far as I can tell. )