I open a new canvas in Photoshop and set a canvas background color. I'm using Adobe RGB color space (though I have also tried it in sRGB, with the same result). When the canvas comes up, and I check it with an external color picker app (ColorPix), it is not showing the same RGB values that I assigned. The ColorPix app is accurate on all the other web design programs I use. I am creating a web header and need the color to match the other colors on the website. I have checked the problem on other computers and in other browsers, and it remains. What Photoshop creates is off from what I tell it to create. Now this is not a browser issue... within Photoshop itself, as soon as the canvas comes up on my monitor, and I check it with the ColorPix app, it gives me a different hex and RGB values than what PS says it is.
(The color chosen in PS e3f0c4 = 227,240,196, but the color that shows on my screen - and other screens - is defsc5 = 222,245,197). It does this consistently, over and over.
What gives? How can I make a background canvas that SHOWS the same as what PS says it is (but which actually is different)?