UIColor和标准色轮中的色相 [英] Hue in UIColor and standard color wheels

问题描述

在UIColor中，绿色在色相上约为0.4标记，红色为0或1，在标准色轮上，绿色与红色相对.还有其他例子.UIColor与UIColor有何不同?

In UIColor, green is around the 0.4 mark in terms of hue, with red at 0 or 1, and on a standard color wheel, green is opposite red. There's other examples too. How come it's different in UIColor?

推荐答案

有很多不同的色彩空间-我认为很难在不提供更多上下文的情况下将其中一个称为标准".我当然不是色彩专家，但是我猜您在说的差异可能是由于RGB和RYB或CMYK色彩模型之间的差异所致.到油漆店，他们会告诉您三种原色是红色，黄色和蓝色.在计算机屏幕上，显然，颜色由红色，绿色和蓝色子像素组成.

There are so many different color spaces -- I think it'd be hard to call one of them "standard" without providing a little more context. I'm certainly no expert on color, but I'd guess that the difference you're talking about is probably due to the difference between RGB and RYB or CMYK color models. Go to a paint store and they'll tell you that the three primary colors are red, yellow, and blue. On computer screens, obviously, colors are composed of red, green, and blue sub-pixels.

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