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Color wheel
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<p>A color wheel or color circle is an abstract illustrative organization of <a href="/facts/Color/a1QSEJhj">color</a> <a href="/facts/Hue/9qufc1ap">hues</a> around a circle, which shows the relationships between <a href="/facts/Primary_color/F4wNk0TC">primary colors</a>, <a href="/facts/Secondary_color/FPsy6xtj">secondary colors</a>, <a href="/facts/Tertiary_color/HeQmGXjJ">tertiary colors</a> etc. </p><p>Some sources use the terms <i>color wheel</i> and <i>color circle</i> interchangeably; however, one term or the other may be more prevalent in certain fields or certain versions as mentioned above. For instance, some reserve the term <i>color wheel</i> for mechanical rotating devices, such as <a href="/facts/Color_triangle/1L0R4MaE">color tops</a>, filter wheels or the <a href="/facts/Newton_disc/jVtwuVtn">Newton disc</a>. Others classify various color wheels as <i>color disc</i>, <i>color chart</i>, and <i>color scale</i> varieties. </p>