Chromatic, a word ultimately derived from the Greek noun χρῶμα (khrṓma), which means "complexion" or "color", and then from the Greek adjective χρωματικός (khrōmatikós; "colored"), may refer to: In music Chromatic scale, the western-tempered twelve-tone scale Chromatic chord, chords built from tones chromatically altered from the native scale of the musical composition Chromaticism, the use of chromatic scales, chords, and modulations Total chromatic, the use of all twelve pitches of the chromatic scale in tonal music Chromatic fantasia, a specific form of fantasia originating in sixteenth century Europe The Chromatic button accordion The chromatic harmonica Chromatic genus, a genus of divisions of the tetrachord characterized by an upper interval of a minor third Diatonic and chromatic, as a property of several structures, genres, and other features in music, often contrasted with diatonic Chromatics (band), an American electronic music band Chromatica, the sixth studio album by American singer Lady Gaga In optics, vision, and color Colorimetry, the science of color is sometimes called chromatics Chromaticity, the quality of a color as determined by its "purity" and dominant wavelength Chromatic aberration, departures from perfect imaging in optics systems due to dispersion Chromatic dispersion, the dispersion of light due to differing refraction index for different wavelengths RG Chromaticity, a two-dimensional color space in which there is no color intensity information Chromatic adaptation, the ability for some organisms to perceive objects similarly in varying lighting conditions In mathematics Chromatic polynomial, a polynomial which encodes the number of different ways to vertex color a graph using n colors Chromatic numbering Chromatic index Acyclic chromatic number Strong chromatic number Fractional chromatic number Vertex chromatic number Other uses Von Luschan's chromatic scale, a method for classifying skin color Chromatic dragon in Dungeons & Dragons chromatic (programmer), a Perl programmer and writer Chromatics Inc., a manufacturer of color graphics display systems chromatic, of biological material, the ability to take up staining See also In music Twelve tone technique Serialism Equal temperament Sequence In Ancient Greek and Byzantine music Diatonic Enharmonic Byzantine Music Maqam (disambiguation) In optics, vision and color color International Commission on Illumination, the international authority on light, illumination, colour, and colour spaces.