Patent ID: 7973971

Claim:
A method comprising: receiving a first color value in a first color space for conversion to a second color value in a second color space, the first color value comprising a luminance component, a chroma component, and a hue component, the second color value comprising a black component and a plurality of color components; determining a limit of a color gamut in the second color space, wherein at least a portion of the limit corresponds to a range of color values representing a substantially darkest portion of the color gamut; identifying a first boundary in the first color space corresponding to the range of color values representing the substantially darkest portion of the color gamut; identifying a gray level associated with the first color value based on a relationship of the luminance component and the chroma component to the first boundary; determining a black component value in the second color space using the identified gray level; and determining the second color value in the second color space corresponding to the first color value in the first color space using the black component value and the first color value in the first color space.