如果您曾经使用过游戏电脑(gaming computer)、电视或相机，那么您不可能没有遇到过RGB一词。您想知道RGB代表什么、它的用途，或者当涉及到计算机、小工具或显示器时，为什么您经常听到关于RGB的消息？(RGB)我们在这里让这一切变得更加清晰(bit clearer)，因此，如果您想了解RGB是什么、最常见的使用方式以及原因，请阅读这篇文章：
RGB 代表什么？
RGB 是(RGB is an acronym for)“Red Green Blue ”的首字母缩写词，正如您所猜到的，它指的是颜色以及颜色的构成方式。你可能会问，为什么是红色、绿色和蓝色？答案是红色、绿色和蓝色是原色，您可以将它们以不同的数量组合，以获得(red, green, and blue are the primary colors that you can combine in various amounts to obtain any other color)人眼可以看到的可见光谱中的任何其他颜色。
RGB是一种加色模型(color model)。换句话说，要获得其他颜色，您需要混合原色红色、绿色和蓝色。如果以maximum intensity (100%), you get white。另一方面，如果mix all of them at their minimum intensity (0%), you get black。
换句话说，将 100% 的红色、绿色和蓝色等量混合，就会得到光，如果混合 0% 的红色、绿色和蓝色，就会得到黑暗。
RGB也可以被认为是 CMY 的对立面，CMY代表“Cyan Magenta Yellow”。为什么相反？因为CMY作为颜色模型(color model)，是RGB的对立面：将青色(combining cyan)、洋红色和黄色以 100% 的最大强度组合为您黑色，而 0% 的最小强度为您提供白色。
RGB的使用方式
首先，RGB 颜色模型用于使用 color 的设备(RGB color model is used in devices that use color)。由于(Due)它是一种加色模型(color model)，当三基色（红、绿、蓝）更饱和时输出较浅的颜色，RGB最适合发光图像显示(image display)。换言之，RGB 颜色模型最适合照明屏幕，例如电视、电脑显示器、笔记本电脑显示器、智能手机和平板电脑屏幕(the RGB color model is best suited for illuminated screens, such as TVs, computer displays, laptop displays, smartphone and tablet screens)。
相比之下，代表“Cyan Magenta Yellow Key (Black)”并源自CMY的(CMY)CMYK是一种反射颜色模型(color model)，这意味着它的颜色被反射而不是被照亮，主要用于印刷。这就是为什么在校准打印机时使用CMY 颜色(CMY color)空间，而在校准计算机显示器(computer display)时使用RGB。
除了电视(TVs)和其他电子显示器外，RGB 颜色(RGB color)模型还用于其他使用照明颜色的设备，例如照片和摄像机或扫描仪(devices that work with illuminated colors, such as photo and video cameras, or scanners)。
例如，LCD 屏幕(LCD screen)由许多像素组成，形成它们的表面。这些像素中的每一个通常由三个不同的光源组成，每个像素都可以变成红色、绿色或蓝色。如果您使用放大镜(magnifying glass)仔细观察LCD 屏幕(LCD screen)，您可以看到这些形成像素的小光源。但是，当您像普通人一样观看它时，没有放大镜(magnifying glass)，您只能看到像素中那些微小光源发出的颜色。通过组合红色、绿色和蓝色，并通过调整它们的亮度，像素可以产生任何颜色。
RGB 也是软件中使用最广泛的颜色模型。(RGB is also the most widely used color model in software.)为了能够指定某种颜色，RGB 颜色(RGB color)模型由三个数字描述，每个数字代表红色、绿色和蓝色的强度。但是，这三个数字的范围可能会有所不同，具体取决于您使用的参考。标准 RGB(Standard RGB)符号可以使用 0 到 255 的三元组值，有些可以使用 0.0 到 1.0 的算术值，有些可以使用 0% 到 100% 的百分比值。
例如，如果RGB颜色由 8 位表示，则意味着每种颜色的范围可以从 0 到 255，0 是颜色的最低强度，255 是最高的颜色。使用这个符号系统(notation system)，RGB (0, 0, 0) 表示黑色，RGB (255, 255, 255) 表示白色。此外，最纯的红色是RGB (255, 0, 0)，最纯的绿色是RGB (0, 255, 0)，最纯的蓝色是RGB (0, 0, 255)。
我们不是偶然选择这个例子：RGB 在软件中通常由每通道 8 位表示法表示(RGB is often represented in software by an 8-bit per channel notation)。如果您想知道为什么 255 是 8 位符号中的最大值，那是因为其中的每种颜色都由 8 位表示。一位可以有两个值：0 或 1。将 2（一位的值的数量）提高到 8 的幂（分配给每种颜色的位数），你得到 256，这是数字的确切数量0 到 255。令人讨厌(Geeky)，对吧？🙂
但是，也常用其他符号，例如每通道 16 位或每通道 24 位符号(16-bit per channel or 24-bit per channel notations)。例如，在 16 位中，每种RGB颜色的值范围从 0 到 65535，而在 24 位表示法中，它们从 0 到 16777215。24位表示法涵盖 1600 万种颜色，即超过人眼可见的所有颜色，最高可达 1000 万(The 24-bit notation covers 16 million colors, which is more than all the colors that are visible to the human eye, which tops at about 10 million)。
欢迎来到RGB(RGB)灯光的彩虹
从软件到硬件，RGB无处不在，而现代世界中最流行的使用RGB的方式之一就是(RGB)RGB照明。我们所说的使用RGB LED(RGB LEDs)不仅可以点亮我们的屏幕，还可以点亮我们的显示器、电视(TVs)、游戏配件（如键盘和鼠标）、主板、显卡、PC 机箱、处理器冷却器、风扇，甚至游戏椅的背面！
RGB 照明(RGB lighting)已经进入了大量的设备，甚至进入了一些家具。虽然有些人认为它很傻，但也有人认为它很酷。无论您喜欢彩虹还是喜欢用单一颜色点亮所有东西，RGB都能让您做到。
但是RGB照明是如何工作的呢？答案比你想象的要简单，这一切都与RGB的含义有关：Red Green Blue。本质上，所有RGB照明设备和固定装置都有RGB LED(RGB LEDs)条或束。RGB LED是三种不同颜色的 LED 的组合：(LEDs)一个红色 LED(Red LED)、一个绿色 LED(Green LED)和一个蓝色 LED(Blue LED)。
图片来源：维基百科(Wikipedia)
通过组合三个LED(LEDs)，混合它们的颜色强度和亮度(color intensity and luminance)，您可以获得几乎任何您想要的颜色。也就是说，如果您没有将LED(LEDs)看得太近。
也许RGB 照明(RGB lighting)的最佳实现是我们在游戏计算机中越来越多地看到的那种。关于它的最好的事情之一是您可以使用软件根据需要自定义和调整计算机的RGB 灯光(RGB lighting)效果。这样的例子是华硕(ASUS)的Aura 软件(Aura software)，它可以让您同步RGB 灯光(RGB lighting)效果，甚至可以根据游戏中的动作动态调整特殊的游戏内效果。
无论哪种方式，一旦您采用RGB 方式(RGB way)，您可能会喜欢它，这要归功于您获得的个性化数量。
您还有其他关于RGB的问题吗？
这只是对RGB是什么以及它的用途的简要说明。它是一个复杂的主题，在许多技术和行业中都有复杂的影响，包括硬件和软件(hardware and software)。因此，我们非常确定您可能对RGB有一些其他问题，因此，如果您有其他问题，请在下面的评论部分中提问，我们承诺会尽最大努力帮助您找出答案。
What is RGB? How is it used? What about RGB lighting?
If you have ever used a gaming computer, a TV, or a camera, it is impossible for you not to have met with the term RGB. Do yoυ want to know what RGB stands for, what it's used for, or why you hеar so often about RGB when computers, gadgets, or displays are invоlved? We are here to make this all a bit clеarer so, if you want to find out what RGB is, which are the most common ways in whіch it is υsed, and why, read this article:
What does RGB stand for?
RGB is an acronym for "Red Green Blue," and, as you have guessed, it refers to colors and how colors are composed. Why red, green, and blue, you might ask? The answer is that red, green, and blue are the primary colors that you can combine in various amounts to obtain any other color from the visible spectrum that the human eye can see.
RGB is an additive color model. In other words, to obtain other colors, you mix the primary red, green, and blue colors. If you mix all three colors at their maximum intensity (100%), you get white. On the other hand, if you mix all of them at their minimum intensity (0%), you get black.
In other words, mixing equal parts of 100% red, green, and blue, you get light, and if you mix 0% of red, green, and blue, you get darkness.
RGB can also be considered as the opposite of CMY, which stands for "Cyan Magenta Yellow." Why the opposite? Because CMY as a color model, is the antithesis of RGB: combining cyan, magenta, and yellow at 100% maximum intensity gives you black, while 0% minimum intensity gives you white.
Ways in which RGB is used
First of all, the RGB color model is used in devices that use color. Due to the fact that it is an additive color model that outputs lighter colors when the three primary mixed colors (red, green, blue) are more saturated, RGB is best suited for emissive image display. In other words, the RGB color model is best suited for illuminated screens, such as TVs, computer displays, laptop displays, smartphone and tablet screens.
In comparison, CMYK, which stands for "Cyan Magenta Yellow Key (Black)" and derives from CMY, is a reflective color model, meaning that its colors are reflected rather than illuminated, and is used mainly in print. That's why, when calibrating a printer, you work with the CMY color space while, when calibrating a computer display, you work with RGB.
Besides TVs and other electronic displays, the RGB color model is also used in other devices that work with illuminated colors, such as photo and video cameras, or scanners.
For example, LCD screens are made of many pixels that form their surface. Each of those pixels is usually made of three different light sources, and each of them can turn red, green, or blue. If you look closely at an LCD screen, using a magnifying glass, you can see these small light sources that form pixels. However, when you are looking at it like a normal person would, without a magnifying glass, you only see the colors emitted by those tiny light sources in the pixels. By combining red, green, and blue, and by adjusting their luminance, the pixels can make any color.
RGB is also the most widely used color model in software. To be able to specify a certain color, the RGB color model is described by three numbers, each of the numbers representing the intensity of red, green, and blue colors. However, the ranges of the three numbers can differ depending on what reference you use. Standard RGB notations can use triplets of values from 0 to 255, some can use arithmetic values from 0.0 to 1.0, and some can use percentage values from 0% to 100%.
For instance, if the RGB colors are represented by 8 bits each, it would mean that the range of each color can go from 0 to 255, 0 being the lowest intensity of a color and 255 the highest one. Using this notation system, RGB (0, 0, 0) would mean black and RGB (255, 255, 255) would mean white. Also, the purest red would be RGB (255, 0, 0), purest green would be RGB (0, 255, 0), and the purest blue would be RGB (0, 0, 255).
We did not choose this example by chance: RGB is often represented in software by an 8-bit per channel notation. If you're wondering why 255 is the maximum value in the 8-bit notation, that's because each color in it is represented by 8 bits. A bit can have two values: 0 or 1. Raise 2 (the number of values of a bit) to the power of 8 (the number of bits assigned for each color) and you get 256, which is the exact number of numbers from 0 to 255. Geeky, right? 🙂
However, other notations are also commonly used, such as 16-bit per channel or 24-bit per channel notations. In 16-bit for example, the range of values for each of the RGB colors goes from 0 to 65535, while in the 24-bit notation, they go from 0 to 16777215. The 24-bit notation covers 16 million colors, which is more than all the colors that are visible to the human eye, which tops at about 10 million.
Welcome to the rainbow of RGB lighting
From software to hardware, RGB is all over, and one of the most trendy ways of using RGB in the modern world is RGB lighting. We're talking about using RGB LEDs to light up not just our screens, but the backs of our monitors, TVs, gaming accessories such as keyboards and mice, motherboards, graphics cards, PC cases, processor coolers, fans, and even gaming chairs!
RGB lighting has pushed its way into a huge array of devices and even into some furniture. Although some people think it's pretty silly, others think that it's cool. Whether you like rainbows or prefer to light up everything in a single color, RGB lets you do it.
But how does RGB lighting work? The answer is simpler than you might think, and it all relates to what RGB means: Red Green Blue. Essentially, all RGB lit devices and fixtures have strips or bundles of RGB LEDs. An RGB LED is a mix of three differently colored LEDs put together: one Red LED, one Green LED, and one Blue LED.
Image source: Wikipedia
By combining the three LEDs, mixing their color intensity and luminance, you can obtain almost any color you want. That is, if you are not looking at the LEDs too close.
Maybe the best implementation of RGB lighting is the one we see increasingly more often in gaming computers. One of the best things about it is that you can use software to customize and adapt your computer's RGB lighting effects as you wish. Such an example is ASUS' Aura software, which lets you sync the RGB lighting effects and even have special in-game effects that adjust on-the-fly depending on the actions in your game.
Either way, once you have gone the RGB way, you'll probably love it, thanks to the amount of personalization you get.
Do you have other questions regarding RGB?
This was just a brief explanation of what RGB is and what it is used for. It is a complex subject with complex ramifications in many technologies and industries, both related to hardware and software. Thus, we are pretty sure that you might have some additional questions about RGB so, if you do, ask away in the comments section below and we promise to do our best to help you figure out the answers.
