CRX id
nmmjeclfkgjdomacpcflgdkgpphpmnfe
nmmjeclfkgjdomacpcflgdkgpphpmnfe
Description from extension meta
Check the contrast between different colour combinations against WCAG standards
Image from store
Description from store
Compare the contrast ratio of 2 colours, background and foreground, within a webpage against level 2 of the Web Content Accessibility Guidelines (WCAG).
*More information about understanding colour contrast:
https://webaim.org/articles/contrast/
Features
- Use the text fields to compare colours using Hex codes or colour names
- Use the colour picker tool to compare colours on a webpage
- Store up to 20 colour combinations you have compared (uses local storage) to refer back to later
- Reverse background and foreground colours
- Generate a share link of colours compared
Once you have installed the extension you may need to reload the webpage you are currently on to begin using the extension.
Latest reviews
- (2025-07-01) Gemma Nunn: Excellent tool. I use it all the time!
- (2025-05-13) Adriana Caycedo: Very helpful
- (2025-03-27) Menno Dijk: Doesn't work. Correctly installed in the newest Chrome on my MacBook Pro. Given all permissions. Clicking the icon doesn't do anything.
- (2024-05-01) Mohamed Salama (Mo Salama Designer): Doesn't work on Brave ..
- (2023-09-11) John Doe: Good, but I would've loved RGB values too, and a comparison between each of the RGB values
- (2023-09-11) John Doe: Good, but I would've loved RGB values too, and a comparison between each of the RGB values
- (2023-04-11) Pablo Alvar mcv: muy útil y muy buen diseño. Enhorabuena y gracias!
- (2023-01-09) Lino Buzy: perfect
- (2022-12-08) Brad Chapman: Didn't work.
- (2022-12-08) Brad Chapman: Didn't work.
- (2022-08-18) Christian Kodehode: Edit: Initially this extension refused to activate after I installed it. However, once I went into my browser's extensions settings and opened the details for this extension where I manually enabled access to file URLs (this was disabled by default) and then restarted my browser, it started working. The same solution applies to similar extensions I tested, and this works on both Chrome and Vivaldi.
- (2022-08-18) Christian Kodehode: Edit: Initially this extension refused to activate after I installed it. However, once I went into my browser's extensions settings and opened the details for this extension where I manually enabled access to file URLs (this was disabled by default) and then restarted my browser, it started working. The same solution applies to similar extensions I tested, and this works on both Chrome and Vivaldi.
- (2022-06-24) Aesha Patel: I figured it out, open the link, and then hold the click on the extension for 2 s. and it will pop down.
- (2022-06-24) Aesha Patel: I figured it out, open the link, and then hold the click on the extension for 2 s. and it will pop down.
- (2022-06-21) Saarah Anne Fletcher: No matter how many times I refreshed or clicked, nothing happened. A bit because it's so pretty.
- (2022-06-21) Saarah Anne Fletcher: No matter how many times I refreshed or clicked, nothing happened. A bit because it's so pretty.
- (2022-06-20) Samali: Very simple, Does the job really well
- (2022-06-20) Samali: Very simple, Does the job really well
- (2021-06-28) Gabrielle: Simple & effective. Use this tool on the daily. Thanks for developing!
- (2021-06-28) Gabrielle: Simple & effective. Use this tool on the daily. Thanks for developing!
- (2021-04-15) Sophie Bryson: Technically, it works. But there is no explanation of the pass/fail results which makes this not appropriate to recommend to my non-tech savvy coworkers who need to test color contrast.
- (2021-03-04) Michael Harshbarger: Great tool to check colour contrast within your browser! Thanks Alex,
- (2021-03-04) Michael Harshbarger: Great tool to check colour contrast within your browser! Thanks Alex,
- (2021-02-24) Amara Eddins: Really wanted to try this tool, but I updated chrome, checked the extension was up to date, restarted my computer, forced quit chrome. Everything, just wouldn't work me, super disappointed and wasted some important work time. Maybe in the future I can try it again and give a more positive review.
- (2021-02-24) Amara Eddins: Really wanted to try this tool, but I updated chrome, checked the extension was up to date, restarted my computer, forced quit chrome. Everything, just wouldn't work me, super disappointed and wasted some important work time. Maybe in the future I can try it again and give a more positive review.
- (2020-12-31) anonymous: Thank you so much for developing this extension. This helps me a lot.
- (2020-12-31) anonymous: Thank you so much for developing this extension. This helps me a lot.
- (2020-08-06) Amy Collins: I really like this idea but I wish it worked for while I was developing websites offline.
- (2020-08-06) Amy Collins: I really like this idea but I wish it worked for while I was developing websites offline.
- (2020-07-30) Johannes Grandy: Actually this is a pretty good contrast checker. Definitely the best i've used so far. A few things could be better: - When clicking on the pipette for picking a color, it takes 1-2 seconds to load. Actually this is the point that annoys me the most. Would be great if that loads instantly. - In the top right are three action buttons that are cut on my computer. Don't know if that is a problem with my system or a general one. Should be investigated on. - The fail/pass badges a a bit to subtle for my opinion. Especially when modifying the color it would be nice to have a more prominent feedback (maybe failing is outlined and passing is solid color).
- (2020-07-30) Johannes Grandy: Actually this is a pretty good contrast checker. Definitely the best i've used so far. A few things could be better: - When clicking on the pipette for picking a color, it takes 1-2 seconds to load. Actually this is the point that annoys me the most. Would be great if that loads instantly. - In the top right are three action buttons that are cut on my computer. Don't know if that is a problem with my system or a general one. Should be investigated on. - The fail/pass badges a a bit to subtle for my opinion. Especially when modifying the color it would be nice to have a more prominent feedback (maybe failing is outlined and passing is solid color).
- (2020-07-22) David Ferris: Great tool!
- (2020-07-22) David Ferris: Great tool!
- (2020-07-14) Saurav Bhuju: Nice UI and Works well
- (2020-01-15) Zuzana Kopanicová: love it
- (2020-01-15) Zuzana Kopanicová: love it
- (2020-01-10) Todd Shorrock: Fab little extension, does everything a designer could need for creating accessible online experiences. (Particularly love the eye dropper feature!)
- (2020-01-10) Todd Shorrock: Fab little extension, does everything a designer could need for creating accessible online experiences. (Particularly love the eye dropper feature!)
- (2019-10-28) Joshua Rogers: What a breath of fresh air, an actually usable contrast checker. The author obviously put thought into the design and it's a delight to use.
- (2019-10-28) Joshua Rogers: What a breath of fresh air, an actually usable contrast checker. The author obviously put thought into the design and it's a delight to use.
- (2019-10-10) Lou Knowles PM: Its great for Dev's and QA's for ensuring that your colours on your pages are AA or AAA compliant with accessibility standards. Love the new colour picker feature too
- (2019-10-10) Lou Knowles PM: Its great for Dev's and QA's for ensuring that your colours on your pages are AA or AAA compliant with accessibility standards. Love the new colour picker feature too
- (2019-10-10) Adam Pendlebury: Invaluable for real devs.
- (2019-10-10) Adam Pendlebury: Invaluable for real devs.
- (2019-10-09) Ning Cao: good
- (2019-10-09) Ning Cao: good
- (2019-09-18) Joe Parisi: Fantastic tool for developers!
- (2019-09-18) Joe Parisi: Fantastic tool for developers!
- (2019-09-12) Will T: Love how easy this tool is to use. A simple, effective way to check colour contrast.
- (2019-09-12) Will T: Love how easy this tool is to use. A simple, effective way to check colour contrast.