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diff --git a/www/color.html b/www/color.html index d0082069e..d80c5f7f5 100644 --- a/www/color.html +++ b/www/color.html @@ -295,7 +295,7 @@ <p>See <a href="http://en.wikipedia.org/wiki/HSL_and_HSV">http://en.wikipedia.org/wiki/HSL_and_HSV</a> for more details on HSL and HSB color systems.</p> -<p>Hue is represented as an angle of the color around the circular perimeter of the cone(s) (i.e. the rainbow represented in a circle). Hue values are either integer or floats in the range 0—360 or integer or float percentage values in the range 0—100%. By definition red=0=360 (or 0%=100%), and the other colors are spread around the circle, so green=120 (or 33.3333%), blue=240 (or (66.6667%), etc. As an angle, it implicitly wraps around such that -120=240 and 480=120, for instance. (Students of trigonometry would say that "coterminal angles are equivalent" here; an angle <em>θ</em> can be standardized by computing the equivalent angle, <em>θ</em> mod 360.)</p> +<p>Hue is represented as an angle of the color around the circular perimeter of the cone(s) (i.e. the rainbow represented in a circle). Hue values are either integer or floats in the range 0—360 or integer or float percentage values in the range 0—100%. By definition red=0=360 (or 0%=100%), and the other colors are spread around the circle, so green=120 (or 33.3333%), blue=240 (or (66.6667%), etc. As an angle, it implicitly wraps around such that -120=240 and 480=120, for instance. (Students of trigonometry would say that "coterminal angles are equivalent" here; an angle <em>θ</em> can be standardized by computing the equivalent angle, <em>θ</em> mod 360.)</p> <p>Saturation is measure outward from the central axis of the cone(s) toward the perimeter of the cone(s). Saturation may be expressed as an integer or float in the range 0—255 or as an integer or float percentage in the range 0—100. Saturation may be thought of as the absence of any "white" mixed with the base color. Thus 255 or 100% is full saturation and corresponds to a point on the outside surface of the cone (HSB) or double cone (HSL). It will be the most "colorful" region. 0 or 0% is no saturation which results in some shade of gray. It occurs along the central axis of the cone or double cone with black at the bottom apex and white at the top.</p> |