![]() In these cases, you can use the oddly-named Shrink mode, which lets you use a marquee to draw a box designating the area to be measured. And if you repeated the process, you would keep drifting further off.Once you’ve measured the desired element or space, you can use a keyboard shortcut to dim the area around your measurement to focus on that area, or take a screenshot of just the measured area.īecause the auto-measure feature uses changes in color to determine object edges, xScope can have trouble if an object or a background features a gradient or shadow, or if the edges of an image aren’t clearly discernible. Although you can't really see the difference through human eyes, it's off. The second row shows what happens if I naively took the wrong rgb(40, 138, 41) values and used them. Finally it gives the exact original values. In the third DCM screenshot, notice that I've changed my Display to use sRGB color space. In the second DCM screenshot, I've changed it to "Display in sRGB", but one of the values is still off due to double conversion rounding error. In the first DCM screenshot, you can see that the values are all off, because it is showing the "Native Values" for "Color LCD" profile. ![]() ![]() Here is an example using DCM on ForestGreen rgb(34, 139, 34). The only way to guarantee the exact original is to temporarily change your display to sRGB, because then there will be no conversion at all.įor further reading, here is an excellent article. Sometimes there will be rounding error and it will be off by a tiny bit. That is because it is double converting from original sRGB to display's Color Profile, then back to sRGB. You can change Digital Color Meter to "Display in sRGB", but that will not always give you the exact original values. What's happening is that the dropper can only capture the value after it's been converted to the display's Color Profile. (If they all match perfectly, then you probably have set your display to use the sRGB profile). Probably most of them will not match exactly. Scan down the list of colors and compare the Digital Color Meter values with the original values. Open the Digital Color Meter and set it to Native Values. Go to a web page that lists CSS web colors and their RGB values. Then the Digital Color Meter's Native Values will give you the exact original RGB values that you are looking for.Īnother alternative method for web pages is to use the browser inspector and look for the css color value directly. To get the exact original RGB values before conversion, you need to temporarily change your System Preferences > Displays > Color > Display Profile to sRGB (which is the most common Color Space, so use sRGB unless you know otherwise). For example, my Macbook Pro is set to the "Color LCD" profile. (The Color Profile in use is displayed at the bottom of the Digital Color Meter window.) This is usually going to be a specific Color Profile for your display. "Native Values" actually means the values after they've been converted to the Color Profile for the current display. (This can be an issue for most color dropper tools).īy default, the Digital Color Meter displays the "Native Values", which sounds like the original RGB values, but it's not. If you simply use the default settings naively, the values it displays are probably not the values you are looking for. You can use macOS' built-in Digital Color Meter, however there is a very important caveat:
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