Composition including a color shifting pigment and a color filter

A method of making a composition comprising:

• selecting a first color shifting pigment having a property of a first color shift that extends from a starting color at normal through a plurality of colors as a viewing angle is increased to a final color at perpendicular to normal, wherein the first color shift rotates counterclockwise relative to, and about, an origin of the L*a*b* color space;
• selecting a color filter having the ability to transmit a portion of the first color shift of the first color shifting pigment and having the ability to absorb a remainder of the first color shift of the first color shifting pigment;
• and
• combining the first color shifting pigment and the color filter to form a composition;
• wherein the composition has a property of a second color shift different from the first color shift;
• and
• wherein the second color shift has a first portion that rotates counterclockwise relative to the origin and a second portion that rotates clockwise relative to the origin.

A method of authenticating a security device, comprising:

• viewing, at a normal angle, an article imprinted with a composition,
• wherein the composition includes a first color shifting pigment having a first color shift that extends from a starting color at normal through a plurality of colors as a viewing angle is increased to a final color at perpendicular to normal, wherein the first color shift rotates counterclockwise relative to, and about, an origin of the L*a*b* color space;
• and a color filter that transmits a portion of the first color shift of the first color shifting pigment and absorbs a remainder of the first color shift of the first color shifting pigment;
• and
• viewing, at a viewing angle, the imprinted article;
• wherein the composition has a second color shift different from the first color shift;
• and
• wherein the second color shift has a first portion that rotates counterclockwise relative to the origin and a second portion that rotates clockwise relative to the origin.