CSS Colors Are Different

css colors are different

Short answer: You can't. Every different browser on every different screen on every OS has a slightly different color balance and you just have to live with it.

If you are trying to make colors match up with images, I suggest using gif for your images however, as PNG or JPEG both contain color management tables that try to compensate for the screen, and end up rendering colors differently from CSS.

Ironically, because GIF is too dumb to know about color balancing, it's much easier to match GIF colors up with hex colors specified in the CSS.

Colors appearing differently on website vs design software

Hex codes are not universal numbers, meaning that a hex code alone doesn't mean anything unless a color space is specified. The differences in the colors are due to your design software using a different color space than the browser you're using to display the website. For more information you should check out this similar thread on hex codes and color spaces.

css color rendering different in safari

Sorry, but there’s really nothing you can do about it.

Each browser has its own rendering engine, and they render colors differently.
Users rarely visit a website in more than one browser, and as a result will probably not notice.
As I said, there’s nothing you can do to change it. Just pick a color that looks fine in the different browsers and continue. I wish I could offer you a better answer but that’s really all there is to it!

CSS color difference between Browsers

Restarting Chrome:
Chrome can displays the colours incorrectly when you change to a monitor that's different from what was used when Chrome was started.

Its an color profile issue

Chrome :

Also maybe try force color profile to sRGB in chrome://flags

Firefox :

You can also change the behavior of Firefox by going to the url: about:config, in Firefox ,then find gfx.color_management.mode setting and changing it to 1 or 0 as the default is 2.

Safari :

Safari has access to your monitor's ICC profile that it will use it to provide the best correspondence in sRGB.

There is no setting in Safari to make it behave like others.

EXTRA:

'On mac, you can check it with the DigitalColor Meter utility you've got in you Apps > Utilities. Set it to Display in sRGB to see the colors measured. Safari will always display the correct sRGB color, while Chrome and Firefox will be off with an non standard sRGB color profile.

If you set your monitor's color profile to an standard sRGB one, then all browsers will show the correct values.' @Kaiido

Colors look different on my website

I think they're the same colour. Take a screenshot then use a color-picker in Paint or something.

Both of your examples posted here return #F0F0F0, and if you cut and paste your example of how it should look over how it does look, you'll see the colours are identical.

I believe it may be the lighter grey behind it that makes it look yellow-ish.

Is there a performance difference between the different css color formats

From what I read in the article I linked below using HEX code is better but not by much we are talking if you have 100,000 colors in your code then it will create 1ms difference between them.

but you can visit this link to get a more meaning full understanding of why is doesn't make that much of a difference

and to see if it really makes a difference run an audit on your website and see the performance difference for each and see which one is better if any.
Link to answer

Chrome renders colours differently from Safari and Firefox

I recently posted a similar question: https://stackoverflow.com/questions/6338077/google-chrome-for-mac-css-colors-and-display-profiles

As Andrew Marshall answered there, this is a known issue: http://code.google.com/p/chromium/issues/detail?id=44872

Colors in CSS based on Browser

Have you tried using box-shadow: 0.05rem 0.05rem 0.2rem rgb(0 0 0 / 50%); under .item instead of filter: drop-shadow?

CSS Colors Are Different