The hue variable retroreflective sheet of the present invention includes:
a surface layer (1) composed of at least one layer; and a plurality of
retroreflective elements (3, 4, 5) that are positioned beneath the
surface layer, wherein the retroreflective elements (3, 4, 5)
retroreflect incident light toward a light source direction, at least one
layer of the surface layer (1) is an optical coherent layer that changes
in color depending on a point of view, and in which an optical coherent
coloring material with a core material having a surface that is covered
with one or more substantially transparent coating layer is dispersed,
and mirror-reflects the incident light toward a direction opposite to the
light source side, at least one layer of the retroreflective sheet is a
colored layer containing a coloring material that colors retroreflected
light, and the retroreflected light and the mirror-reflected light
provide different hues. Thereby, the present invention provides the hue
variable retroreflective sheet that provides hues in two or more
different colors by the interference of light in daylight, provides
retroreflected light in color with a hue that is different from the hue
in the daylight when light is projected at night, and provides a color
that has still different from the hue of the retroreflected light on the
other side of an incident light beam.