Color pixel picker how to#
Color pixel picker code#
Color pixel picker plus#

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.

Color pixel picker code#

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.

Color pixel picker how to#

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.

As using the mouse to extract a color can be inaccurate, to avoid losing the exact point where you want to extract the color, you can use the precise Cartesian (x, y) coordinate options, which lock the location of the pixel.Digital images consist out of pixels (big news huh?). The increased radius is shown with a green border in the magnifying glass and also on the JPG itself.

Color pixel picker plus#

Similarly, an eyedropper of radius 3 extracts an average color from an area of 5×5 (it's the center pixel plus two pixels to all sides). For example, an eyedropper of radius 2 extracts the average color from an area of 3×3 (it's the center pixel, plus another pixel in all directions). If you want to get the color of a larger area than a single pixel, you can increase the eyedropper radius. This is the pixel that is used for picking the color. When you do that, a magnifying glass appears and in its center, you'll see a magnified pixel with a red border around it. To extract a color as accurately as possible, click on the loaded photo and hold down the mouse button. If necessary, you can also print any of these color codes on the output JPG by using the print-color-name option. Also, in the options below, the names of the color are printed in many, many different formats – you get the web-safe color name as text and then programmatic color codes in HEX, RGB, RGBA, HSL, HSV, HSI, LAB, LCH, and HCL formats.

The color itself is painted in the output area and can be downloaded as a separate JPG. You can upload a JPG photo, click on any point on the photo with the mouse, and you'll instantly get detailed information about the selected color. With this online utility, you can extract color from JPG/JPEG and JPEG2000 pictures.