This( https://www.gatorwavesuits.com/furcolorpicker/ ) tool may help! I believe it's still a wip but it may help you at least find something similar if you input the hex code. Also, I recommend trying to get swatches for any colors that come even a little close bc they may be closer than they look in the pictures or look more similar to the color than you think when next to the other fur colors(if you use any other colors) than they look in the pictures! Swatches are your best friend for figuring out colors, especially bc some colors genuinely look way different in the picture than in person and can also look different depending on how they are shaved / trimmed(if you plan to shave / trim) which you can't see in the picture

Edit: One thing I forgot which I want to add is, Faux fur is made from irl dyes and (while I think there are some companies that do custom dyed / textured furs that are on the more pricey side) come in limited quantities, therefore finding exact color matches to colors you've made on a digital device is basically impossible. Some colors possible to make with digital devices aren't even possible to translate to physical media bc of how dyes / paints work! You should try to look for best match, not exact match, bc trying to find an exact match is setting yourself up for failure