Contrast VS Eye Dropper

A few apps that are a joy to use: https://ia.net/writer for writing. https://usecontrast.com/ for checking contrast. https://sipapp.io/ for picking colors. https://nova.app/ for editing code. https://cleanshot.com/ for screenshots. https://getpixelsnap.com/ for measuring elements on screen. https://netnewswire.com/ for reading things via RSS. https://panic.com/transmit/ for file transfers. https://usefathom.com/... - Source: Hacker News / 4 months ago

Colour and contrast are also of enormous importance. Several tools, such as Contrast and Colorsafe, will help you check the sufficiency of the colors you use, contrast, etc. Make sure colour-blind users can easily read your app. - Source: dev.to / over 2 years ago

Contrast A macOS app for quick access to WCAG color contrast ratios. - Source: dev.to / about 3 years ago

Here, we will want to make the blue color transparent so we can fill it in ourselves. Using a Chrome eye dropper plugin, I found the color we need to make transparent is: #3183bf. We can set this to transparent using the image_transparent() function from the magick package, then use as.raster() to make it something R can plot again. Source: almost 3 years ago

In this case they can use a browser extension like Eye Dropper to give you an accurate answer. Source: almost 3 years ago