以编程方式淡化颜色 [英] Programmatically Lighten a Color

问题描述

动机

我想找到一种方法，可以采取任意颜色和减少几个阴影，程序化地创建从一种颜色到较轻版本的漂亮渐变。渐变将用作用户界面中的背景。

I'd like to find a way to take an arbitrary color and lighten it a few shades, so that I can programatically create a nice gradient from the one color to a lighter version. The gradient will be used as a background in a UI.

可能性1

显然，我可以分割出RGB值，并单独增加一定量。这实际上是我想要的吗？

Obviously I can just split out the RGB values and increase them individually by a certain amount. Is this actually what I want?

可能性2

将RGB转换为HSV / HSB / HSL（色相，饱和度，值/亮度/亮度），增加亮度一点，逐渐降低饱和度，然后将其转换回RGB。这会有一般的期望效果吗？

My second thought was to convert the RGB to HSV/HSB/HSL (Hue, Saturation, Value/Brightness/Lightness), increase the brightness a bit, decrease the saturation a bit, and then convert it back to RGB. Will this have the desired effect in general?

推荐答案

我会去第二个选项。一般来说，RGB空间对于颜色操作（创建从一种颜色到另一种颜色的过渡，淡化/变暗颜色等）并不是很好。下面是两个网站，我发现与快速搜索转换/到RGB /从HSL：

I would go for the second option. Generally speaking the RGB space is not really good for doing color manipulation (creating transition from one color to an other, lightening / darkening a color, etc). Below are two sites I've found with a quick search to convert from/to RGB to/from HSL:

• C＃中的一些源代码 - 应易于适应其他编程语言。 / li>
  

• from the "Fundamentals of Computer Graphics"
• some sourcecode in C# - should be easy to adapt to other programming languages.

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