Tertiary color secondary colors: orange-green, green-purple, purple-orange; or by intermixing complementary colors. This approach to tertiary color relates specifically to color in the form of paints, pigments and dyes. The primary colors in an RGB color wheel are red, green, and blue, because these are the three additive colors—the primary colors of light. The secondary colors in an RGB color wheel are cyan, magenta, and yellow because these are the three subtractive colors—the primary colors of pigment. The tertiary color names used in the descriptions of RGB (or equivalently CMYK) systems are shown below. The primary colors in an RYB color wheel
Blue–green distinction in language from light blue to light grey. However, the term for a green apple, such as a Granny Smith, would be "ubhal glas". The boundary between colors varies much more than the "focal point": e.g. an island known in Breton as "Enez glas ("the blue island")" is called in French "l'Île Verte ("the green island")", in both cases referring to the greyish-green color of its bushes, even though both languages distinguish green (as in lawn grass) from blue (as in a cloudless midday sky). The Romance terms for "green" (Catalan ', French ', Italian, Portuguese, Romanian and Spanish ') are all