如何反转颜色？ [英] How do I invert a colour?

问题描述

我知道这不会直接反转颜色，只会反对颜色。我想知道是否有人知道一种简单的方法（几行代码）来将任何给定颜色的颜色反转？

I know that this won't directly invert a colour, it will just 'oppose' it. I was wondering if anyone knew a simple way (a few lines of code) to invert a colour from any given colour?

目前我有这个方法（这是 t恰好是反转的定义，因为如果我将其传递为灰色/灰色，它将返回极其相似的内容，例如127、127、127）：

At the moment I have this (which isn't exactly the definition of an invert, because if I pass it a grey / gray colour it will return something extremely similar e.g. 127, 127, 127):

const int RGBMAX = 255;

Color InvertMeAColour(Color ColourToInvert)
{
    return Color.FromArgb(RGBMAX - ColourToInvert.R, 
      RGBMAX - ColourToInvert.G, RGBMAX - ColourToInvert.B);
}

推荐答案

这取决于您的工作意思是反转颜色

It depends on what do you mean by "inverting" a color

您的代码提供了负颜色。

Your code provides a "negative" color.

您在寻找吗？将红色转换为青色，将绿色转换为紫色，将蓝色转换为黄色（依此类推）？如果是这样，您需要在 HSV 模式下转换RGB颜色（您会发现此处

Are you looking for transform red in cyan, green in purple, blue in yellow (and so on) ? If so, you need to convert your RGB color in HSV mode (you will find here to make the transformation).

然后，您只需要反转色相值（将 Hue 更改为 360-Hue ）并转换回RGB模式。

Then you just need to invert the Hue value (change Hue by 360-Hue) and convert back to RGB mode.

编辑：正如Alex Semeniuk所说，更改 Hue by （Hue + 180）％360 是一个更好的解决方案（它不会反转色相，但会在色环上找到相反的颜色）

as Alex Semeniuk has mentioned, changing Hue by (Hue + 180) % 360 is a better solution (it does not invert the Hue, but find the opposite color on the color circle)

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