![]() In a first step, we have to shift in the upper 5 bits of red The code for converting a 4 byte type such as intĬan be found after this section. Let’s assume we have 3 individual input bytes, one for each color. Note that since we have less bits (information) available, we can represent less colors. Providing 5 bits for 2 colors and 6 bits for another seems asymmetric but storing and transmitting something which cannot nicely be packed in bytes would be complicated. It provides 5 bits for Red and Blue and 6 bits for Green. RGB565 requires only 16 (5+6+5) bits/2 bytes and is commonly used with embedded screens. Moreover, storing and/or transmitting 3 bytes per pixel is consuming quite some memory and creates latency. ( read more about bit numbering)Įspecially (cheap) screens used with embedded devices do not provide 24 bit color-depth. This is a common convention, though there are also others (LSB first). If the bits on the left have the highest significance, then its called MSB (most signficant bit) first. The bits on the left have a higher significance and hence have a stronger impact on the color. In the first row I indicate the bit number and in the second row I indicate which color this bit represents and how "significant" it is. In the table below you can see how RGB888 is stored in memory. I highlighted the color each digit represents. ![]() Usually the color code is represented in hexadecimal digits (because 1 byte results in exactly 2 digits).Īn example with common notations for the color yellow (R=255,G=255,B=0) can be seen below. It defines that we have 8 bits/1 byte of information for each primary color (Red, Green, Blue) which, if added, result in the desired color. There are different ways on how to represent a color but virtually all displays use RGB, where a color is represented by its Red Green and Blue components (you might have heard something about it in school, a long long time ago, if not: primary colors).Ī common representation of color information is the RGB888 (24 bit/3 byte) format. The more bits (information), the more colors we can display. The color depth defines how many bits are used to represent a color. If we want to have colored pictures, we also need information about the color. This however brings the limitation that we can only indicate if a pixel is ON or OFF (e.g. ![]() For monochrome images this is simply a single bit of information, where a prominent example are images on LCD displays such as those in old GameBoys. If we want to store or transmit an image, we have to provide information about each individual pixel. Once you’re in dev tools, look for a CSS element that has the quality of color.īy default, dev tools opens to “Elements” with “Styles” open in the lower panel.Digital images consist out of pixels (big news huh?). You can also open dev tools from the Chrome menu under “More tools.” Step 2: Find a CSS element with a color quality Windows, Linux, Chrome OS: CTRL+Shift+JĪlternatively, right-click or CTRL+click on the element you want to inspect and select “Inspect” from the drop-down.The first thing to do is to open dev tools. Once you’ve found it once, though, it’s easy. But the color picker is tucked away in dev tools. You don’t even need to get under the hood in Chrome Settings. ![]() To use Chrome’s built-in color picker tool, you don’t need to install anything. Here’s where to find it and how to use it. There’s also an eyedropper color picker built into Chrome. What about getting colors from images or logos?įor this, you’ll need an eyedropper tool. When you mouse over an element in dev tools, you’ll see basic details like font and color: Open dev tools ( CMD+Shift+C on a Mac, CTRL+Shift+J on Windows). In some cases, you’ll be able to grab the color of a web element with two clicks. Chrome already has a color picker built in.
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