Simple formulas are proposed for predicting the Munsell value of colors with the same tone (the same values for whiteness-blackness, perceived lightness, and chroma irrespective of hue). The formulas can be used for any tone. In other words, the method can determine the Munsell value with the same perceived lightness at any specified chroma irrespective of hue. The chromatic strength (CS) function is only used for the derivations. The formulas are very simple, and can be used not only in the colorimetry but also in the color design field. The concept described in this study is that a common CS function can be used for transforming each of the three color attributes (hue, lightness, and chroma) from their uniform color space metric to their corresponding color appearance space attribute. (c) 2010 Wiley Periodicals, Inc. Col Res Appl, 36, 140-147, 2011; Published online 13 April 2010 in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/col.20596